Prevent ability to double book a person, show conflict!
Yes. Seems like it should be a fundamental feature.
It would be nice if when you book a shift for someone who is already booked in another group if the system would give you a message identifying this. I don't want it to prevent booking because I often have more than one task or group assigned to a rep. They may be working in more than one place. Not sure why I thought this was important but maybe wanted to follow to make sure I can still book more than one Group/activity each day to a rep.
Billy Roesener commented
This seems like a no brainer.