The first group off should be advanced group because the more experienced drivers will allow the event to start for flaggers and volunteers with the least chance for operational issues.
First lap of first session should not have a flag - if track insists, have them use white.
Advanced group should be allowed to pass anywhere with a point-by, as long as the track allows it.
Driver coach should observe all on-track activity, help call for blue and black flags and speak with drivers who need information/are black flagged.
Event manager should observe and manage calls for black flags not noticed by corner workers.
Session should be shown checkered flag so that all cars will be in at 20 minutes.