Filter by campus on the iPhone app and see everyone in its rooms

On the iPhone app, the location filter in an emergency roll only lets you pick one location at a time. There is no way to select a campus and see everyone within it — you have to filter each room separately, one after another.

Two things are needed, both of which the web app already does:

1. Select a campus and see everyone inside it. Picking Academic Campus should include the students in the Health Centre, Gymnasium, In Class and any other room within it — in one step.

2. Still be able to see only those on campus without a specific room. Some students are recorded at campus level rather than in a room, and being able to see just that group is genuinely useful.

The web app covers both today: the Summary panel on the right gives a one-click campus view with live counts, and the Filters panel lets you untick the rooms to isolate the campus-level students. The iPhone app has neither, so a staff member on their phone during a drill cannot get a campus overview at all.

I'm thinking of a scenario where I, or perhaps the principal, would want to get a quick overview of the entire school. From my phone, I can't currently do that because I must select each location individually. It would be much more useful to have the ability to filter by the academic campus and see everyone there at once… At the same time, I can also see a scenario where I would want to see those who are on campus but not in a specific room. If there's a way to make both scenarios easy to accomplish… that would be ideal.