diff --git a/source/view/filters.c b/source/view/filters.c
index 990f704..446388a 100644
--- a/source/view/filters.c
+++ b/source/view/filters.c
@@ -1,26 +1,34 @@
 #include "filters.h"
 
-filters_window *filters_widgets;
+filters_window *filters_widgets = NULL;
 
 filters_window *filters_setup_window(char* glade_path){
-    filters_widgets = malloc(sizeof(filters_window));
-    GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
-    filters_widgets->Window = yon_gtk_builder_get_widget(builder,"wndFilters");
-    filters_widgets->chbFilterTypeQouota = yon_gtk_builder_get_widget(builder,"chbFilterTypeQouota");
-    filters_widgets->chbQuotaVolume = yon_gtk_builder_get_widget(builder,"chbQuotaVolume");
-    filters_widgets->chbSoftLimit = yon_gtk_builder_get_widget(builder,"chbSoftLimit");
-    filters_widgets->chbHardLimit = yon_gtk_builder_get_widget(builder,"chbHardLimit");
-    filters_widgets->chbSwapFileLimit = yon_gtk_builder_get_widget(builder,"chbSwapFileLimit");
-    filters_widgets->chbIOLimitWrite = yon_gtk_builder_get_widget(builder,"chbIOLimitWrite");
-    filters_widgets->chbCPULimit = yon_gtk_builder_get_widget(builder,"chbCPULimit");
-    filters_widgets->chbIOLimitRead = yon_gtk_builder_get_widget(builder,"chbIOLimitRead");
-    filters_widgets->btnFiltersCancel = yon_gtk_builder_get_widget(builder,"btnFiltersCancel");
-    filters_widgets->btnFiltersSave = yon_gtk_builder_get_widget(builder,"btnFiltersSave");
+    if (filters_widgets == NULL) {
+        filters_widgets = malloc(sizeof(filters_window));
+        GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
+        filters_widgets->Window = yon_gtk_builder_get_widget(builder,"wndFilters");
+        filters_widgets->chbFilterTypeQouota = yon_gtk_builder_get_widget(builder,"chbFilterTypeQouota");
+        filters_widgets->chbQuotaVolume = yon_gtk_builder_get_widget(builder,"chbQuotaVolume");
+        filters_widgets->chbSoftLimit = yon_gtk_builder_get_widget(builder,"chbSoftLimit");
+        filters_widgets->chbHardLimit = yon_gtk_builder_get_widget(builder,"chbHardLimit");
+        filters_widgets->chbSwapFileLimit = yon_gtk_builder_get_widget(builder,"chbSwapFileLimit");
+        filters_widgets->chbIOLimitWrite = yon_gtk_builder_get_widget(builder,"chbIOLimitWrite");
+        filters_widgets->chbCPULimit = yon_gtk_builder_get_widget(builder,"chbCPULimit");
+        filters_widgets->chbIOLimitRead = yon_gtk_builder_get_widget(builder,"chbIOLimitRead");
+        filters_widgets->btnFiltersCancel = yon_gtk_builder_get_widget(builder,"btnFiltersCancel");
+        filters_widgets->btnFiltersSave = yon_gtk_builder_get_widget(builder,"btnFiltersSave");
+        filters_event(filters_widgets);
+    }
     return filters_widgets;
 }
 
 void filters_event(filters_window *widgets) {
     g_signal_connect(G_OBJECT(widgets->btnFiltersCancel),"clicked",G_CALLBACK(filters_on_hide_subwindow),NULL);
+    g_signal_connect(G_OBJECT(widgets->Window), "destroy", G_CALLBACK(filters_destroy), NULL);
+}
+
+void filters_destroy(GtkWidget *self) {
+    filters_widgets = NULL;
 }
 
 void filters_localization(filters_window *widgets) {
@@ -29,6 +37,7 @@ void filters_localization(filters_window *widgets) {
 
 void filters_on_hide_subwindow(GtkWidget *self) {
     gtk_widget_destroy(gtk_widget_get_toplevel(self));
+    filters_widgets = NULL;
 }
 
 filters_window *get_widget_filters() {
@@ -36,5 +45,11 @@ filters_window *get_widget_filters() {
 }
 
 void filters_show(GtkWidget *self) {
-    gtk_widget_show_all(filters_widgets->Window);
+    if (filters_widgets != NULL) {
+        gtk_widget_show_all(filters_widgets->Window);
+    }
+    else {
+        
+    }
+    
 }
\ No newline at end of file
diff --git a/source/view/filters.h b/source/view/filters.h
index 8f6a9ef..9794374 100644
--- a/source/view/filters.h
+++ b/source/view/filters.h
@@ -34,4 +34,5 @@ void filters_localization(filters_window *widgets);
 void filters_on_hide_subwindow(GtkWidget *self);
 filters_window *get_widget_filters();
 void filters_show(GtkWidget *self);
+void filters_destroy(GtkWidget *self);
 #endif
\ No newline at end of file
diff --git a/source/view/ubl-settings-resourcequota.c b/source/view/ubl-settings-resourcequota.c
index a090090..2d0680d 100644
--- a/source/view/ubl-settings-resourcequota.c
+++ b/source/view/ubl-settings-resourcequota.c
@@ -1,7 +1,7 @@
 #include "ubl-settings-resourcequota.h"
 
 config main_config;
-
+main_window *widgets;
 /**on_close_subwindow(GtkWidget *self)
  * [EN]
  * Closes window in which [self] is contained.
@@ -116,9 +116,12 @@ void config_init(){
 
 main_window *setup_window(){
     /* Widgets getting | Получение виджетов */
-    main_window *widgets = malloc(sizeof(main_window));
+    widgets = malloc(sizeof(main_window));
     GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
     widgets->Window = yon_gtk_builder_get_widget(builder,"MainWindow");
+
+    widgets->notebookMain = yon_gtk_builder_get_widget(builder,"notebookMain");
+
     widgets->btnEdit = yon_gtk_builder_get_widget(builder,"btnEdit");
     widgets->btnAdd = yon_gtk_builder_get_widget(builder,"btnAdd");
     widgets->btnInfo = yon_gtk_builder_get_widget(builder,"btnInfo");
@@ -157,7 +160,7 @@ main_window *setup_window(){
 }
 
 void info_show(GtkWidget *self) {
-
+    gtk_notebook_set_current_page(GTK_NOTEBOOK(widgets->notebookMain), 3);
 }
 
 void event_all(main_window *widgets) {
diff --git a/source/view/ubl-settings-resourcequota.h b/source/view/ubl-settings-resourcequota.h
index 29b6178..b4280ef 100644
--- a/source/view/ubl-settings-resourcequota.h
+++ b/source/view/ubl-settings-resourcequota.h
@@ -56,6 +56,7 @@ typedef struct {
 typedef struct {
     GtkWidget *Window;
     GtkWidget *btnShowFilters;
+    GtkWidget *notebookMain;
     GtkWidget *btnEdit;
     GtkWidget *btnInfo;
     GtkWidget *btnAdd;
diff --git a/source/view/view_add.c b/source/view/view_add.c
index f82aa5a..2c92ec3 100644
--- a/source/view/view_add.c
+++ b/source/view/view_add.c
@@ -1,18 +1,26 @@
 #include "view_add.h"
 
-add_window *add_widgets;
-
-add_window *add_setup_window(char* glade_path){
-    add_widgets = malloc(sizeof(add_window));
-    GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
-    add_widgets->Window = yon_gtk_builder_get_widget(builder,"wndQuotasAdding");
-    add_widgets->btnSaveAddSave = yon_gtk_builder_get_widget(builder,"btnSaveAddSave");
-    add_widgets->btnAddCancel = yon_gtk_builder_get_widget(builder,"btnAddCancel");
+add_window *add_widgets = NULL;
+
+add_window *add_setup_window(char* glade_path) {
+    if (add_widgets == NULL) {
+        add_widgets = malloc(sizeof(add_window));
+        GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
+        add_widgets->Window = yon_gtk_builder_get_widget(builder,"wndQuotasAdding");
+        add_widgets->btnSaveAddSave = yon_gtk_builder_get_widget(builder,"btnSaveAddSave");
+        add_widgets->btnAddCancel = yon_gtk_builder_get_widget(builder,"btnAddCancel");
+        add_event(add_widgets);
+    }
     return add_widgets;
 }
 
 void add_event(add_window *widgets) {
-    g_signal_connect(G_OBJECT(widgets->btnSaveAddSave),"clicked",G_CALLBACK(add_on_hide_subwindow),NULL);
+    g_signal_connect(G_OBJECT(widgets->btnAddCancel),"clicked",G_CALLBACK(add_on_hide_subwindow),NULL);
+    g_signal_connect(G_OBJECT(widgets->Window), "destroy", G_CALLBACK(add_destroy), NULL);
+}
+
+void add_destroy(GtkWidget *self) {
+    add_widgets = NULL;
 }
 
 void add_localization(add_window *widgets) {
@@ -21,6 +29,8 @@ void add_localization(add_window *widgets) {
 
 void add_on_hide_subwindow(GtkWidget *self) {
     gtk_widget_destroy(gtk_widget_get_toplevel(self));
+    add_widgets = NULL;
+    
 }
 
 add_window *get_widget_add() {
@@ -28,5 +38,11 @@ add_window *get_widget_add() {
 }
 
 void add_show(GtkWidget *self) {
-    gtk_widget_show_all(add_widgets->Window);
+    if (add_widgets != NULL) {
+        gtk_widget_show_all(add_widgets->Window);
+    }
+    else {
+        
+    }
+    
 }
\ No newline at end of file
diff --git a/source/view/view_add.h b/source/view/view_add.h
index e15e58c..fb4de5e 100644
--- a/source/view/view_add.h
+++ b/source/view/view_add.h
@@ -26,4 +26,5 @@ void add_localization(add_window *widgets);
 void add_on_hide_subwindow(GtkWidget *self);
 add_window *get_widget_add();
 void add_show(GtkWidget *self);
+void add_destroy(GtkWidget *self);
 #endif
\ No newline at end of file
diff --git a/source/view/view_edit.c b/source/view/view_edit.c
index 6a68369..edbc652 100644
--- a/source/view/view_edit.c
+++ b/source/view/view_edit.c
@@ -1,18 +1,26 @@
 #include "view_edit.h"
 
-edit_window *edit_widgets;
+edit_window *edit_widgets = NULL;
 
 edit_window *edit_setup_window(char* glade_path){
-    edit_widgets = malloc(sizeof(edit_window));
-    GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
-    edit_widgets->Window = yon_gtk_builder_get_widget(builder,"wndQuotasEdit");
-    edit_widgets->btnEditCancel = yon_gtk_builder_get_widget(builder,"btnEditCancel");
-    edit_widgets->btnSaveEditSave = yon_gtk_builder_get_widget(builder,"btnSaveEditSave");
+    if (edit_widgets == NULL) {
+        edit_widgets = malloc(sizeof(edit_window));
+        GtkBuilder *builder = gtk_builder_new_from_file(glade_path);
+        edit_widgets->Window = yon_gtk_builder_get_widget(builder,"wndQuotasEdit");
+        edit_widgets->btnEditCancel = yon_gtk_builder_get_widget(builder,"btnEditCancel");
+        edit_widgets->btnSaveEditSave = yon_gtk_builder_get_widget(builder,"btnSaveEditSave");
+        edit_event(edit_widgets);
+    }
     return edit_widgets;
 }
 
 void edit_event(edit_window *widgets) {
     g_signal_connect(G_OBJECT(widgets->btnEditCancel),"clicked",G_CALLBACK(edit_on_hide_subwindow),NULL);
+    g_signal_connect(G_OBJECT(widgets->Window), "destroy", G_CALLBACK(edit_destroy), NULL);
+}
+
+void edit_destroy(GtkWidget *self) {
+    edit_widgets = NULL;
 }
 
 void edit_localization(edit_window *widgets) {
@@ -21,6 +29,7 @@ void edit_localization(edit_window *widgets) {
 
 void edit_on_hide_subwindow(GtkWidget *self) {
     gtk_widget_destroy(gtk_widget_get_toplevel(self));
+    edit_widgets = NULL;
 }
 
 edit_window *get_widget_edit() {
@@ -28,5 +37,11 @@ edit_window *get_widget_edit() {
 }
 
 void edit_show(GtkWidget *self) {
-    gtk_widget_show_all(edit_widgets->Window);
+    if (edit_widgets != NULL) {
+        gtk_widget_show_all(edit_widgets->Window);
+    }
+    else {
+        
+    }
+    
 }
\ No newline at end of file
diff --git a/source/view/view_edit.h b/source/view/view_edit.h
index 2e1add2..024b08c 100644
--- a/source/view/view_edit.h
+++ b/source/view/view_edit.h
@@ -26,4 +26,5 @@ void edit_localization(edit_window *widgets);
 void edit_on_hide_subwindow(GtkWidget *self);
 edit_window *get_widget_edit();
 void edit_show(GtkWidget *self);
+void edit_destroy(GtkWidget *self);
 #endif
\ No newline at end of file
diff --git a/ubl-settings-resourcequota.glade b/ubl-settings-resourcequota.glade
index 90edad8..a8d9205 100644
--- a/ubl-settings-resourcequota.glade
+++ b/ubl-settings-resourcequota.glade
@@ -618,7 +618,7 @@ translated and supported by community.</property>
                     <property name="vexpand">True</property>
                     <property name="orientation">vertical</property>
                     <child>
-                      <object class="GtkNotebook">
+                      <object class="GtkNotebook" id="notebookMain">
                         <property name="visible">True</property>
                         <property name="can-focus">True</property>
                         <child>