How to add a tab from another panel in the buttons window

Surely this one must be easy, but I haven’t found how to do it:

What I want is to be able to add some tabs from other panels, for example, I find very useful to have tabs from the texture buttons (F6) in the material window (F5).

Thanks in advance.

Panels can’t be moved across different button windows as far as I know.

I suppose that you could split your buttons window and add another buttons window.

You can use a L shape layout.
Materials Horizontal, Textures Vertical.
That way you still have a good size 3d view.

select themodel you want or you can make your own