I have a conforming cloth in P7 and made in ZBrush3 a displacementmap and a texture map for this cloth. Back in P7 I want to apply these new maps. But .. there is no group which comprises the whole cloth (I made the maps for the whole cloth) . 
I do know how to make a new group and assign new material to it WITHIN an existing group, but I don't know how to make a new actual group (not subgroup)
So how do I get these maps functioning?