1. Assigning sets the default state. They can be enabled at any time by your mapped key! In most cases this is absolutely desired (otherwise no matter what you wouldn't be able to turn on a Key Map that wasnt on by default), but as you've discovered it can also set you back in other cases. I plan on improving this particular situation in ISBoxer 35
2. For now, you can make a different DNP/pause key per team. The easiest way of doing so currently is putting it in a non-toggleable key map (or at least one that doesnt get toggled by the key itself) that is specific to the team.