Guild Wars 2

Has anyone determined if there is a way to end missions early if your guild has completed the requirements and members are done. Example, 21 minute rush. Rush was completed and all members that were running it had done so multiple times and we meet the requirements. Would be nice to have an option to say done to free up the course for the next group that was waiting and also allow members to move onto other activities. People were concerned that if they just left they would miss their commendation if they were out of zone when the rush ended. Anyone find a way to do this? I understand you don’t want this to auto-complete in case you have member still running but there are times when you are done early or way early in more extreme situations, hence a way to trigger the ending.