Hi @GaFire,
First of all, welcome to the community 😊🎉
As I understand your question, you have 2 parent galleries in the same screen between which the user can swap and select items. Galleries 3 and 4 are connected to the previous parent galleries respectively and stacked on top of each other. When they select an item in Gal1, they want to see Gal3; When they select an item in Gal2, they want to see Gal4. Is this correct?
To achieve this, we will need to keep track of which gallery is selected / is in focus. The OnSelect of the parent galleries will need to update a variable to keep track of the focus:
//OnSelect of gallery1:
UpdateContext({varGalFocus: "Gal1"})
//OnSelect of gallery2:
UpdateContext({varGalFocus: "Gal2"})
The Visible properties of Gal3 and 4 will depend on the variable value (Visible of those galleries):
//Visible of Gallery3:
varGalFocus = "Gal1"
//Visible of Gallery4:
varGalFocus = "Gal2"
If this solves your question, would you be so kind as to accept it as a solution.
Thanks!