I think it is very useful to be able to set up groups of cameras such that the user can quickly enable/disable motion detection, for example, with one click for that group, while leaving the others as is. For example, the user can have indoor cameras in one group, while outdoor cameras are in a different group, so that when the user arrives home, he/she can just disable motion detection for only the indoor cameras with one click. Of course, the same camera can be a member of multiple groups as the user sees fit.