Under the meeting scheduler, you can currently add to a primary calendar and check against any connected team members' calendar availability. It will schedule the meeting around everyone's calendar but not add them to the meeting invitation. This would save us a ton of extra work adding selected parties onto the calendar. I know Moxie's solution is to create a shared team calendar, but this is not a great solution for us. We have many collaborators who we wouldn't want to be seeing all meetings and invitations, and we don't want to have so many calendars as we already have a few.