different time signatures in right and left hand

For a new piano piece I need in the right hand a 6/8 bar and in the left hand a 3/4 bar. Is this possible? I think I saw something like that somewhere here in the forum, but I cannot find it.

Yeah. Use the popover as usual but finish off with Alt+Enter. Then do the same for the other stave.

Thank you very much! It works!

Same goes for key signatures, incidentally.