diff --git a/FILES/CSS/styleSheetMain.css b/FILES/CSS/styleSheetMain.css
index a9ba9c4..dbea2bc 100644
--- a/FILES/CSS/styleSheetMain.css
+++ b/FILES/CSS/styleSheetMain.css
@@ -117,7 +117,8 @@ QPushButton:flat, QToolButton:flat {
     border: none; /* no border for a flat push button */
 }
 QPushButton:disabled, QToolButton:disabled {
-	background-color: #777777;
+	/*background-color: #777777;*/
+	background-color: #bbbbbb;
 	/*border-color: gray;*/
 }
 QPushButton:default, QToolButton:default {
@@ -261,7 +262,7 @@ QTabBar::tab:selected {
 }
 QTabBar::tab:!selected {
 	border-style: inset;
-	background: #aaaaaa;
+	background: #bbbbbb;
 }
 
 QTabBar::tab:hover {
diff --git a/LibInstructorsAndTrainees/instructors/viewerinstructors.cpp b/LibInstructorsAndTrainees/instructors/viewerinstructors.cpp
index 0f69afc..41e02fb 100644
--- a/LibInstructorsAndTrainees/instructors/viewerinstructors.cpp
+++ b/LibInstructorsAndTrainees/instructors/viewerinstructors.cpp
@@ -10,7 +10,7 @@ ViewerInstructors::ViewerInstructors(ConnectorToServer* connectorToServer, QWidg
 {
     ui->setupUi(this);
 
-    connect(treeWidget, &QTreeWidget::itemClicked, this, &ViewerInstructors::on_treeWidgetItemClicked);
+    connect(treeWidget, &QTreeWidget::currentItemChanged, this, &ViewerInstructors::on_treeWidgetCurrentItemChanged);
 
     ui->horizontalLayout_1->addWidget(treeWidget);
 
@@ -94,14 +94,14 @@ void ViewerInstructors::on_btnEditorInstructors_clicked()
     connectorToServer->sendQueryBlockAuth(false);
 }
 
-void ViewerInstructors::on_treeWidgetItemClicked(QTreeWidgetItem *item, int column)
+void ViewerInstructors::on_treeWidgetCurrentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous)
 {
-    if(item == nullptr)
+    if(current == nullptr)
         return;
 
     //if(current->childCount() == 0)
     {//Выбран обучаемый
-        QString login = item->text(ColumnsTreeUsers::clmn_Login);
+        QString login = current->text(ColumnsTreeUsers::clmn_Login);
         //if(login != "")
         {
             int newCurrentID = connectorToServer->getIdInstructorByLogin(login);
@@ -118,11 +118,11 @@ void ViewerInstructors::on_treeWidgetItemClicked(QTreeWidgetItem *item, int colu
                 {
                     for (int i = 0; i < ColumnsTreeUsers::clmn_count; i++)
                     {
-                        item->setBackground(i, QBrush(Qt::GlobalColor::white));
+                        current->setBackground(i, QBrush(Qt::GlobalColor::white));
                     }
                     mapNewMsg.take(newCurrentID);
-                    item->setIcon(ColumnsTreeUsers::clmn_Messages, QIcon());
-                    item->setText(ColumnsTreeUsers::clmn_Messages, "");
+                    current->setIcon(ColumnsTreeUsers::clmn_Messages, QIcon());
+                    current->setText(ColumnsTreeUsers::clmn_Messages, "");
                 }
             }
             mtxmapNewMsg.unlock();
diff --git a/LibInstructorsAndTrainees/instructors/viewerinstructors.h b/LibInstructorsAndTrainees/instructors/viewerinstructors.h
index bfe947f..cc65ca1 100644
--- a/LibInstructorsAndTrainees/instructors/viewerinstructors.h
+++ b/LibInstructorsAndTrainees/instructors/viewerinstructors.h
@@ -32,7 +32,7 @@ public slots:
 public Q_SLOTS:
     void on_btnEditorInstructors_clicked();
 
-    void on_treeWidgetItemClicked(QTreeWidgetItem *item, int column);
+    void on_treeWidgetCurrentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);
 
 Q_SIGNALS:
     //сигнал о выборе инструктора
diff --git a/LibInstructorsAndTrainees/resources/icons/exchange.png b/LibInstructorsAndTrainees/resources/icons/exchange.png
index fcaec47..072e765 100644
Binary files a/LibInstructorsAndTrainees/resources/icons/exchange.png and b/LibInstructorsAndTrainees/resources/icons/exchange.png differ
diff --git a/LibInstructorsAndTrainees/resources/icons/old/exchange.png b/LibInstructorsAndTrainees/resources/icons/old/exchange.png
index 013dad5..fcaec47 100644
Binary files a/LibInstructorsAndTrainees/resources/icons/old/exchange.png and b/LibInstructorsAndTrainees/resources/icons/old/exchange.png differ
diff --git a/LibInstructorsAndTrainees/resources/icons/old/exchange__.png b/LibInstructorsAndTrainees/resources/icons/old/exchange__.png
new file mode 100644
index 0000000..013dad5
Binary files /dev/null and b/LibInstructorsAndTrainees/resources/icons/old/exchange__.png differ
diff --git a/LibInstructorsAndTrainees/trainees/viewertrainees.cpp b/LibInstructorsAndTrainees/trainees/viewertrainees.cpp
index 4cb2ff5..e36b748 100644
--- a/LibInstructorsAndTrainees/trainees/viewertrainees.cpp
+++ b/LibInstructorsAndTrainees/trainees/viewertrainees.cpp
@@ -16,7 +16,7 @@ ViewerTrainees::ViewerTrainees(ConnectorToServer* connectorToServer, MessangerCo
     ui->setupUi(this);    
 
     connect(treeWidget, &QTreeWidget::itemDoubleClicked, this, &ViewerTrainees::on_itemDoubleClicked);
-    connect(treeWidget, &QTreeWidget::itemClicked, this, &ViewerTrainees::on_treeWidgetItemClicked);
+    connect(treeWidget, &QTreeWidget::currentItemChanged, this, &ViewerTrainees::on_treeWidgetCurrentItemChanged);
 
     ui->horizontalLayout_1->addWidget(treeWidget);
 
@@ -173,16 +173,16 @@ void ViewerTrainees::on_itemDoubleClicked(QTreeWidgetItem *item, int column)
     }
 }
 
-void ViewerTrainees::on_treeWidgetItemClicked(QTreeWidgetItem *item, int column)
+void ViewerTrainees::on_treeWidgetCurrentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous)
 {
-    if(item == nullptr)
+    if(current == nullptr)
         return;
 
-    if(item->childCount() == 0)
+    if(current->childCount() == 0)
     {//Выбран обучаемый
         typeObject = TypeObject::objTrainee;
 
-        QString login = item->text(ColumnsTreeUsers::clmn_Login);
+        QString login = current->text(ColumnsTreeUsers::clmn_Login);
         //if(login != "")
         {
             int newCurrentID = connectorToServer->getIdTraineeByLogin(login);
@@ -199,11 +199,11 @@ void ViewerTrainees::on_treeWidgetItemClicked(QTreeWidgetItem *item, int column)
                 {
                     for (int i = 0; i < ColumnsTreeUsers::clmn_count; i++)
                     {
-                        item->setBackground(i, QBrush(Qt::GlobalColor::white));
+                        current->setBackground(i, QBrush(Qt::GlobalColor::white));
                     }
                     mapNewMsg.take(newCurrentID);
-                    item->setIcon(ColumnsTreeUsers::clmn_Messages, QIcon());
-                    item->setText(ColumnsTreeUsers::clmn_Messages, "");
+                    current->setIcon(ColumnsTreeUsers::clmn_Messages, QIcon());
+                    current->setText(ColumnsTreeUsers::clmn_Messages, "");
                 }
             }
             mtxmapNewMsg.unlock();
@@ -215,7 +215,7 @@ void ViewerTrainees::on_treeWidgetItemClicked(QTreeWidgetItem *item, int column)
     {//Выбрана группа
         typeObject = TypeObject::objGroup;
 
-        int id_group = item->text(ColumnsTreeUsers::clmn_ID).toInt();
+        int id_group = current->text(ColumnsTreeUsers::clmn_ID).toInt();
 
         lastCurrentID = id_group;
         typeObject = TypeObject::objGroup;
diff --git a/LibInstructorsAndTrainees/trainees/viewertrainees.h b/LibInstructorsAndTrainees/trainees/viewertrainees.h
index cc010a3..742060f 100644
--- a/LibInstructorsAndTrainees/trainees/viewertrainees.h
+++ b/LibInstructorsAndTrainees/trainees/viewertrainees.h
@@ -41,7 +41,7 @@ public Q_SLOTS:
     void on_btnPersonalCard_clicked();
 private Q_SLOTS:
     void on_itemDoubleClicked(QTreeWidgetItem *item, int column);
-    void on_treeWidgetItemClicked(QTreeWidgetItem *item, int column);
+    void on_treeWidgetCurrentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);
 
 Q_SIGNALS:
     //сигнал о выборе обучаемого