I want to start using portfolio forecasting, and, going by what I’ve read in the help files, it looks like I need to begin using groups in order to be able to accomplish that.

“draw the groups on the floor plan using polyline boundaries” sounds simple enough… but, we do have some agile teams here.
For those who use Groups, how do you account for groups/space ownership when you’ve got teams working together who are comprised of people from different departments and divisions?