Creating Tabs/Folders within the SDK.

I'm designing screens in the Screen Painter which our developers are then going to put the back-end development to. I can't see how to create Tabs though.

I've found the option and have viewed an existing screen (orders) but this still doesn't help as it would appear to create only the Tabs 'tab' and not the actual space in which you would enter details. I had thought it would have something to do with the 'FromPane' and 'ToPane' fields but these are not used on the 'orders' example I've looked at.

Would you be able to point me in the right direction?

Thanks, Simon.