How do I make an object delete itself in a layout and appear in another one?

So, im making a game where you can travel around places and put objects in a backpack, once you pick and object you can store it in the backpack so it goes to the backpack layout, but i don't know how to do that

can someone help me?

This is an inventory, right? You can use an array to create an inventory and add items. When you go to the backpack layout you display the items in the array.