Does CK II supports multiple offmap powers or does it require some interface modding ?
It supports multiple. 3 offmap power buttons can be entirely visible at a time and a scrollbar allows accessing numbers greater than that.
Do you know how to add the scrollbar ?
It appears automatically when a character has access to enough offmap powers so as to need it.
really? well that would make things interesting for the dunmer/chimer religions. the false tribunal with separate offmap powers for Vivec, Almalexia, and Sotha Sil, and the actual tribunal for the others.