diff --git a/build/bin/imgui.ini b/build/bin/imgui.ini
index e4db645..a785099 100644
--- a/build/bin/imgui.ini
+++ b/build/bin/imgui.ini
@@ -44,6 +44,10 @@ Pos=400,0
 Size=400,30
 
 [Window][Set time multiplier]
-Pos=400,640
+Pos=400,639
 Size=400,30
 
+[Window][Set overlap]
+Pos=500,31
+Size=300,70
+
diff --git a/build/bin/mainV10 b/build/bin/mainV10
index d8233ee..67429c6 100755
Binary files a/build/bin/mainV10 and b/build/bin/mainV10 differ
diff --git a/src/collections/headers/collection_interface.hpp b/src/collections/headers/collection_interface.hpp
index 237fe80..e608818 100644
--- a/src/collections/headers/collection_interface.hpp
+++ b/src/collections/headers/collection_interface.hpp
@@ -22,9 +22,13 @@ class CollectionInterface{
             transparency = alpha;
             return true;
         }; 
-        float getTransparency() {
+        virtual bool getVisibility(){
+            return isVisible;
+        }
+        virtual float getTransparency() {
             return transparency;
         }
+
         virtual void setVisibility(bool c) {
             isVisible = c;
         }
diff --git a/src/collections/methods/gamba.cpp b/src/collections/methods/gamba.cpp
index a7168d8..0d95302 100644
--- a/src/collections/methods/gamba.cpp
+++ b/src/collections/methods/gamba.cpp
@@ -63,13 +63,7 @@ void Gamba::setDirection(Direction dir){
 float Gamba::getZ_Acc(){
     
     float totZ_Acc = 0;
-    /*
-    for (auto i : sensori){
-        totZ_Acc += i->getZ_Acc();
-    }*/
-    
     totZ_Acc = sensori[0]->getZ_Acc() + sensori[1]->getZ_Acc();
-    //printf("TotAccGamba %f\n", totZ_Acc);
 
     return totZ_Acc;
 }
\ No newline at end of file
diff --git a/src/sfml_util.cpp b/src/sfml_util.cpp
index 2b7118e..3b52c95 100644
--- a/src/sfml_util.cpp
+++ b/src/sfml_util.cpp
@@ -5,6 +5,7 @@
 #include "collections/headers/collection_interface.hpp"
 #include <imgui.h>
 #include <imgui-SFML.h>
+#include <format>
 
 template <typename T1, typename T2>
 double dist(sf::Vector2<T1> p1, sf::Vector2<T2> p2)
@@ -300,7 +301,9 @@ void doGUI(State &gs)
                                  ImGuiWindowFlags_NoScrollbar|
                                  ImGuiWindowFlags_NoCollapse|
                                  ImGuiWindowFlags_NoTitleBar;
-   
+
+
+    // Finestra gestione posizione dati  
     ImGui::Begin("Set data position", 0,sdp_flags);
     ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x * 0.3);
     ImGui::SliderScalar("Start", ImGuiDataType_U32 ,gs.intervalMinLimit,&zero,gs.intervalMajLimit);
@@ -345,9 +348,29 @@ void doGUI(State &gs)
     *gs.tMul = TimeMul[Timeid]; 
     ImGui::End();
 
-    //Finestra controllo sovrapposizione 
-    
-    
+    //Finestra controllo sovrapposizione (solo su collezioni)
+    ImGui::Begin("Set overlap", 0,sdp_flags);
+    int c = 0;
+    for (auto i : gs.collections){
+        std::stringstream s;
+        s <<"Collezione :" << c;
+        ImGui::Text(s.str().c_str());
+        float tmpTr = i->getTransparency();
+        if (ImGui::SliderFloat("Transparency ", &tmpTr,0.0,1.0)) {
+            gs.updateCollections();
+            i->setTransparency(tmpTr);
+        }
+        bool tmpVs = i->getVisibility();
+        if (ImGui::Checkbox("is visible", &tmpVs)) {
+            i->setVisibility(tmpVs);
+            gs.updateCollections();
+        }
+        
+        
+        c++;
+        ImGui::Separator();
+    }
+    ImGui::End();
 
 
     sf::Vector2u wsize = gs.window.getSize();
@@ -355,8 +378,11 @@ void doGUI(State &gs)
     ImGui::SetWindowSize("Set data position",ImVec2(wsize.x,30));
     ImGui::SetWindowPos("Set visualization plane",ImVec2(wsize.x-400,0));
     ImGui::SetWindowSize("Set visualization plane",ImVec2(400,30));
-    ImGui::SetWindowPos("Set time multiplier",ImVec2(wsize.x-400,wsize.y - 60));
+    ImGui::SetWindowPos("Set time multiplier",ImVec2(wsize.x-400,wsize.y - 61));
     ImGui::SetWindowSize("Set time multiplier",ImVec2(400,30));
+    ImGui::SetWindowPos("Set overlap",ImVec2(wsize.x-300,31));
+    ImGui::SetWindowSize("Set overlap",ImVec2(300,70*gs.collections.size()));
+    
     ImGui::SFML::Render(gs.window);
 }