I think that we might have a language/translation problem here.
1. You have not answered
@aeric's question "What is the size of your tablet?". What is its size in inches (or cms), and in pixels?
2. I don't understand this comment . . .
I have to design the layout for many tables with different UI
Is your problem only about designing for a very large screen, or is it that you have a lot of tables that you need to fit on a single screen, or both of these, or - different problem - that you need to produce several separate screen layouts?
I am not sure whether your difficulty is that you do not know how to use some of the Designer features, or that you do not know how to design the user interface. In the second case you might have to change your system design before you start working on the interface design problem.