In the Layout Editor, right click on a component you would like to copy and select ‘Copy’ to copy that component only or ‘Copy all’ to copy all components in the screen.
Navigate back to the Glide dashboard and to another app in the same team. In the Layout Editor, navigate to the desired screen. In the components area bottom left, right click and select ‘Paste’.
As far as I know, copy-pasting components between apps works fine as long as the apps are within the same team.
You need to bring the value from the other table into the table that your screen is attached to. That may be as simple as a Single Value column, or it may require a Relation and Lookup column. It all depends on the where that value is and how it relates to your current screen.
You can only paste if you keep the Glide interface in ONE browser tab. You CANNOT open multiple tabs and paste between them. But if you navigate to App 1, copy your component, then navigate to App 2, you’ll be able to paste.