In my family there are a lot of, shall we say, "serious amateur" photographers who are really into photography as a hobby, and even a sports photographer who does it as a sideline for local sports events. Whenever our family members get together, there's a lot of family photo shoots.
I've heard it said, and seen posted here, that good pros can deal skillfully with these kinds of amateurs who might try to dominate posed photo groupings, but I'm wondering how you (pros) actually go about it? While I'm in no way opposed to such persons getting whatever shots they can outside of group sessions (and some are really great), how do you get such persons out of the way and prevent them from interfering with the group shots you're under contract to take or co-opting them by trying to take the same shots with their own equipment?