The Team picker will help focus on selected teams only if (because you have so many Teams that it is hard to find, all there are some many objectives or you just want to focus on a particular Team during the Inspect and Adapt ceremony). You can use the Team Picker to select which teams to display or collapse in the Team swimlane.
Select All / Deselect All Teams
Want to focus only on the high-level or general objectives? For example when during the system demo when the focus is on the Actual Business values of your Program Increment objectives? You can select or deselect all Teams. If you uncheck all the Teams or click "Deselect All," only the general Objective will be displayed.
To quickly find the Team, use the search box and start typing in the Team name.