How do I keep only 5 files in a folder

[heldersales]

I back-up my Quicken files to OneDrive -> Quicken. I would like a Hazel rule that keeps track of that folder and keeps only the 5 most recent files.

[Mr_Noodle]

You can do "If <<some date>> is not among the 5 most recent, Move to trash". You'll have to decide which date attribute most accurately reflects your notion of "most recent".