@Rogue843 - assuming you have Gallery controls inside these Containers, when a user first starts the app and makes a selection from the Gallery in Container 1, your app is always going to be consider that Gallery control as selected unless it is reset with empty.
For example, on the Visible property of Container 2, I would expect you have something along the lines of:
!IsBlank(Gallery1.Selected)
On the Default property of the Gallery in Container 1, use:
{}
Insert a Button control and on the OnSelect property, use:
Reset(Gallery1)
