Scheduling deletion of snapshots

My VM is set to have automatic snapshots. When Parallels decides to delete snapshots it picks the most inopportune times to do so. Usually right in the middle of a deadline, so I am dead in the water with my VM for up to 25 minutes at a time. Parallels please let us be able to have the system do the deletion on a schedule like during the middle of the night instead of prime time working hours.

 

Still an issue 4 years later for Parallels 18. Why can't Parallels just schedule (like in the background when the Parallels app isn't even running)? I'm just trying to add an entry into Quicken Home/Business (until just recently there was no Mac version). In and out, should take 5-10 min of my time.