Need to select several teams in the "Team" filter in the Team Backlog module to be able to do other filters at the same time such as:
o Elements belonging to the team in which the user is
o The elements of the sprint in progress
o The elements of the backlog of any other team in which the user is involved.
....while you're doing changes in the area it would be nice to show and select several releases as well........instead of just one at a time