diff --git a/src/ui/Ui_semesterapparat_ui.py b/src/ui/Ui_semesterapparat_ui.py
index ed64d65..02d8719 100644
--- a/src/ui/Ui_semesterapparat_ui.py
+++ b/src/ui/Ui_semesterapparat_ui.py
@@ -24,7 +24,7 @@ class Ui_MainWindow(object):
         MainWindow.setMaximumSize(QtCore.QSize(1590, 800))
         MainWindow.setContextMenuPolicy(QtCore.Qt.ContextMenuPolicy.NoContextMenu)
         icon = QtGui.QIcon()
-        icon.addPixmap(QtGui.QPixmap("c:\\Users\\aky547\\GitHub\\SemesterapparatsManager\\src\\ui\\../../../../icons/logo.ico"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
+        icon.addPixmap(QtGui.QPixmap("c:\\Users\\aky547\\GitHub\\SemesterapparatsManager\\src\\ui\\../../../../../../icons/logo.ico"), QtGui.QIcon.Mode.Normal, QtGui.QIcon.State.Off)
         MainWindow.setWindowIcon(icon)
         MainWindow.setStatusTip("")
         self.centralwidget = QtWidgets.QWidget(parent=MainWindow)
@@ -278,7 +278,7 @@ class Ui_MainWindow(object):
         self.btn_add_document.setFont(font)
         self.btn_add_document.setObjectName("btn_add_document")
         self.appname_mand = QtWidgets.QLabel(parent=self.app_group_box)
-        self.appname_mand.setGeometry(QtCore.QRect(340, 50, 16, 21))
+        self.appname_mand.setGeometry(QtCore.QRect(330, 50, 16, 21))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
@@ -345,7 +345,7 @@ class Ui_MainWindow(object):
         self.valid_check_app_fach.setObjectName("valid_check_app_fach")
         self.gridLayout_6.addWidget(self.valid_check_app_fach, 0, 2, 1, 1)
         self._mand = QtWidgets.QLabel(parent=self.app_group_box)
-        self._mand.setGeometry(QtCore.QRect(340, 90, 16, 21))
+        self._mand.setGeometry(QtCore.QRect(330, 90, 16, 21))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
@@ -362,14 +362,14 @@ class Ui_MainWindow(object):
         self.prof_tel_nr.setObjectName("prof_tel_nr")
         self.check_eternal_app = QtWidgets.QCheckBox(parent=self.app_group_box)
         self.check_eternal_app.setEnabled(False)
-        self.check_eternal_app.setGeometry(QtCore.QRect(350, 120, 101, 17))
+        self.check_eternal_app.setGeometry(QtCore.QRect(340, 120, 101, 17))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
         self.check_eternal_app.setFont(font)
         self.check_eternal_app.setObjectName("check_eternal_app")
-        self.sem_sommer = QtWidgets.QRadioButton(parent=self.app_group_box)
-        self.sem_sommer.setGeometry(QtCore.QRect(350, 100, 82, 17))
+        self.sem_sommer = QtWidgets.QCheckBox(parent=self.app_group_box)
+        self.sem_sommer.setGeometry(QtCore.QRect(340, 100, 82, 17))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
@@ -471,13 +471,13 @@ class Ui_MainWindow(object):
         self.apparat_id_adis.setObjectName("apparat_id_adis")
         self.formLayout_3.setWidget(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.apparat_id_adis)
         self.sem_year = QtWidgets.QLineEdit(parent=self.app_group_box)
-        self.sem_year.setGeometry(QtCore.QRect(420, 90, 113, 20))
+        self.sem_year.setGeometry(QtCore.QRect(410, 90, 113, 20))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
         self.sem_year.setFont(font)
         self.sem_year.setFocusPolicy(QtCore.Qt.FocusPolicy.StrongFocus)
-        self.sem_year.setMaxLength(4)
+        self.sem_year.setMaxLength(5)
         self.sem_year.setObjectName("sem_year")
         self.check_send_mail = QtWidgets.QCheckBox(parent=self.app_group_box)
         self.check_send_mail.setGeometry(QtCore.QRect(460, 150, 91, 17))
@@ -486,8 +486,8 @@ class Ui_MainWindow(object):
         font.setBold(False)
         self.check_send_mail.setFont(font)
         self.check_send_mail.setObjectName("check_send_mail")
-        self.sem_winter = QtWidgets.QRadioButton(parent=self.app_group_box)
-        self.sem_winter.setGeometry(QtCore.QRect(350, 80, 82, 17))
+        self.sem_winter = QtWidgets.QCheckBox(parent=self.app_group_box)
+        self.sem_winter.setGeometry(QtCore.QRect(340, 80, 82, 17))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
@@ -516,14 +516,14 @@ class Ui_MainWindow(object):
         self.btn_apparat_save.setFont(font)
         self.btn_apparat_save.setObjectName("btn_apparat_save")
         self.label_5 = QtWidgets.QLabel(parent=self.app_group_box)
-        self.label_5.setGeometry(QtCore.QRect(260, 50, 91, 21))
+        self.label_5.setGeometry(QtCore.QRect(250, 50, 91, 21))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
         self.label_5.setFont(font)
         self.label_5.setObjectName("label_5")
         self.app_name = QtWidgets.QLineEdit(parent=self.app_group_box)
-        self.app_name.setGeometry(QtCore.QRect(350, 50, 113, 20))
+        self.app_name.setGeometry(QtCore.QRect(340, 50, 113, 20))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
@@ -540,7 +540,7 @@ class Ui_MainWindow(object):
         self.drpdwn_app_nr.setEditable(True)
         self.drpdwn_app_nr.setObjectName("drpdwn_app_nr")
         self.label_6 = QtWidgets.QLabel(parent=self.app_group_box)
-        self.label_6.setGeometry(QtCore.QRect(280, 90, 61, 21))
+        self.label_6.setGeometry(QtCore.QRect(270, 90, 61, 21))
         font = QtGui.QFont()
         font.setPointSize(9)
         font.setBold(False)
@@ -552,6 +552,26 @@ class Ui_MainWindow(object):
         self.valid_check_profname.setAutoRaise(True)
         self.valid_check_profname.setArrowType(QtCore.Qt.ArrowType.NoArrow)
         self.valid_check_profname.setObjectName("valid_check_profname")
+        self.valid_check_appname = QtWidgets.QToolButton(parent=self.app_group_box)
+        self.valid_check_appname.setGeometry(QtCore.QRect(450, 50, 22, 22))
+        self.valid_check_appname.setText("")
+        self.valid_check_appname.setAutoRaise(True)
+        self.valid_check_appname.setObjectName("valid_check_appname")
+        self.valid_check_semester = QtWidgets.QToolButton(parent=self.app_group_box)
+        self.valid_check_semester.setGeometry(QtCore.QRect(520, 90, 22, 22))
+        self.valid_check_semester.setText("")
+        self.valid_check_semester.setAutoRaise(True)
+        self.valid_check_semester.setObjectName("valid_check_semester")
+        self.valid_check_mail = QtWidgets.QToolButton(parent=self.app_group_box)
+        self.valid_check_mail.setGeometry(QtCore.QRect(240, 140, 22, 22))
+        self.valid_check_mail.setText("")
+        self.valid_check_mail.setAutoRaise(True)
+        self.valid_check_mail.setObjectName("valid_check_mail")
+        self.valid_check_telnr = QtWidgets.QToolButton(parent=self.app_group_box)
+        self.valid_check_telnr.setGeometry(QtCore.QRect(240, 160, 22, 22))
+        self.valid_check_telnr.setText("")
+        self.valid_check_telnr.setAutoRaise(True)
+        self.valid_check_telnr.setObjectName("valid_check_telnr")
         self.gridLayout_2.addWidget(self.app_group_box, 1, 0, 1, 1)
         self.add_medium = QtWidgets.QPushButton(parent=self.createApparat)
         self.add_medium.setGeometry(QtCore.QRect(3, 695, 121, 20))
@@ -677,7 +697,7 @@ class Ui_MainWindow(object):
         self.elsa_semester.setObjectName("elsa_semester")
         self.gridLayout_7.addWidget(self.elsa_semester, 2, 1, 1, 1)
         self.table_elsa_list = QtWidgets.QTableWidget(parent=self.elsa)
-        self.table_elsa_list.setGeometry(QtCore.QRect(20, 410, 771, 321))
+        self.table_elsa_list.setGeometry(QtCore.QRect(20, 410, 771, 301))
         self.table_elsa_list.setFrameShape(QtWidgets.QFrame.Shape.StyledPanel)
         self.table_elsa_list.setFrameShadow(QtWidgets.QFrame.Shadow.Sunken)
         self.table_elsa_list.setEditTriggers(QtWidgets.QAbstractItemView.EditTrigger.NoEditTriggers)
@@ -697,12 +717,12 @@ class Ui_MainWindow(object):
         self.elsa_statistic_frame.setGeometry(QtCore.QRect(800, 410, 451, 321))
         self.elsa_statistic_frame.setObjectName("elsa_statistic_frame")
         self.elsa_statistics = QtWidgets.QTabWidget(parent=self.elsa_statistic_frame)
-        self.elsa_statistics.setGeometry(QtCore.QRect(0, 0, 451, 321))
+        self.elsa_statistics.setGeometry(QtCore.QRect(0, 0, 451, 301))
         self.elsa_statistics.setObjectName("elsa_statistics")
         self.tab_9 = QtWidgets.QWidget()
         self.tab_9.setObjectName("tab_9")
         self.elsa_statistics_table = QtWidgets.QTableWidget(parent=self.tab_9)
-        self.elsa_statistics_table.setGeometry(QtCore.QRect(0, 0, 441, 291))
+        self.elsa_statistics_table.setGeometry(QtCore.QRect(0, 0, 441, 271))
         self.elsa_statistics_table.setFocusPolicy(QtCore.Qt.FocusPolicy.WheelFocus)
         self.elsa_statistics_table.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
         self.elsa_statistics_table.setEditTriggers(QtWidgets.QAbstractItemView.EditTrigger.NoEditTriggers)
diff --git a/src/ui/semesterapparat_ui.ui b/src/ui/semesterapparat_ui.ui
index 662ec9b..6ce7e96 100644
--- a/src/ui/semesterapparat_ui.ui
+++ b/src/ui/semesterapparat_ui.ui
@@ -42,7 +42,7 @@
   </property>
   <property name="windowIcon">
    <iconset>
-    <normaloff>../../../../icons/logo.ico</normaloff>../../../../icons/logo.ico</iconset>
+    <normaloff>../../../../../../icons/logo.ico</normaloff>../../../../../../icons/logo.ico</iconset>
   </property>
   <property name="statusTip">
    <string/>
@@ -649,7 +649,7 @@
                 <widget class="QLabel" name="appname_mand">
                  <property name="geometry">
                   <rect>
-                   <x>340</x>
+                   <x>330</x>
                    <y>50</y>
                    <width>16</width>
                    <height>21</height>
@@ -826,7 +826,7 @@
                 <widget class="QLabel" name="_mand">
                  <property name="geometry">
                   <rect>
-                   <x>340</x>
+                   <x>330</x>
                    <y>90</y>
                    <width>16</width>
                    <height>21</height>
@@ -870,7 +870,7 @@
                  </property>
                  <property name="geometry">
                   <rect>
-                   <x>350</x>
+                   <x>340</x>
                    <y>120</y>
                    <width>101</width>
                    <height>17</height>
@@ -886,10 +886,10 @@
                   <string>Dauerapparat</string>
                  </property>
                 </widget>
-                <widget class="QRadioButton" name="sem_sommer">
+                <widget class="QCheckBox" name="sem_sommer">
                  <property name="geometry">
                   <rect>
-                   <x>350</x>
+                   <x>340</x>
                    <y>100</y>
                    <width>82</width>
                    <height>17</height>
@@ -1147,7 +1147,7 @@
                 <widget class="QLineEdit" name="sem_year">
                  <property name="geometry">
                   <rect>
-                   <x>420</x>
+                   <x>410</x>
                    <y>90</y>
                    <width>113</width>
                    <height>20</height>
@@ -1163,7 +1163,7 @@
                   <enum>Qt::StrongFocus</enum>
                  </property>
                  <property name="maxLength">
-                  <number>4</number>
+                  <number>5</number>
                  </property>
                  <property name="placeholderText">
                   <string>2023</string>
@@ -1188,10 +1188,10 @@
                   <string>Mail senden</string>
                  </property>
                 </widget>
-                <widget class="QRadioButton" name="sem_winter">
+                <widget class="QCheckBox" name="sem_winter">
                  <property name="geometry">
                   <rect>
-                   <x>350</x>
+                   <x>340</x>
                    <y>80</y>
                    <width>82</width>
                    <height>17</height>
@@ -1276,7 +1276,7 @@
                 <widget class="QLabel" name="label_5">
                  <property name="geometry">
                   <rect>
-                   <x>260</x>
+                   <x>250</x>
                    <y>50</y>
                    <width>91</width>
                    <height>21</height>
@@ -1298,7 +1298,7 @@
                 <widget class="QLineEdit" name="app_name">
                  <property name="geometry">
                   <rect>
-                   <x>350</x>
+                   <x>340</x>
                    <y>50</y>
                    <width>113</width>
                    <height>20</height>
@@ -1339,7 +1339,7 @@
                 <widget class="QLabel" name="label_6">
                  <property name="geometry">
                   <rect>
-                   <x>280</x>
+                   <x>270</x>
                    <y>90</y>
                    <width>61</width>
                    <height>21</height>
@@ -1377,6 +1377,70 @@
                   <enum>Qt::NoArrow</enum>
                  </property>
                 </widget>
+                <widget class="QToolButton" name="valid_check_appname">
+                 <property name="geometry">
+                  <rect>
+                   <x>450</x>
+                   <y>50</y>
+                   <width>22</width>
+                   <height>22</height>
+                  </rect>
+                 </property>
+                 <property name="text">
+                  <string/>
+                 </property>
+                 <property name="autoRaise">
+                  <bool>true</bool>
+                 </property>
+                </widget>
+                <widget class="QToolButton" name="valid_check_semester">
+                 <property name="geometry">
+                  <rect>
+                   <x>520</x>
+                   <y>90</y>
+                   <width>22</width>
+                   <height>22</height>
+                  </rect>
+                 </property>
+                 <property name="text">
+                  <string/>
+                 </property>
+                 <property name="autoRaise">
+                  <bool>true</bool>
+                 </property>
+                </widget>
+                <widget class="QToolButton" name="valid_check_mail">
+                 <property name="geometry">
+                  <rect>
+                   <x>240</x>
+                   <y>140</y>
+                   <width>22</width>
+                   <height>22</height>
+                  </rect>
+                 </property>
+                 <property name="text">
+                  <string/>
+                 </property>
+                 <property name="autoRaise">
+                  <bool>true</bool>
+                 </property>
+                </widget>
+                <widget class="QToolButton" name="valid_check_telnr">
+                 <property name="geometry">
+                  <rect>
+                   <x>240</x>
+                   <y>160</y>
+                   <width>22</width>
+                   <height>22</height>
+                  </rect>
+                 </property>
+                 <property name="text">
+                  <string/>
+                 </property>
+                 <property name="autoRaise">
+                  <bool>true</bool>
+                 </property>
+                </widget>
                </widget>
               </item>
              </layout>
@@ -1705,7 +1769,7 @@
                <x>20</x>
                <y>410</y>
                <width>771</width>
-               <height>321</height>
+               <height>301</height>
               </rect>
              </property>
              <property name="frameShape">
@@ -1756,7 +1820,7 @@
                 <x>0</x>
                 <y>0</y>
                 <width>451</width>
-                <height>321</height>
+                <height>301</height>
                </rect>
               </property>
               <widget class="QWidget" name="tab_9">
@@ -1769,7 +1833,7 @@
                   <x>0</x>
                   <y>0</y>
                   <width>441</width>
-                  <height>291</height>
+                  <height>271</height>
                  </rect>
                 </property>
                 <property name="focusPolicy">