How to turn a non virtual file into a virtual file on macOS desktop beta

Hello! I have ran nextcloud for over 6 months now and have loved it so much. I recently switched from Windows to macOS for my laptop due to needing it for school. I downloaded nextcloud desktop for macOS and also enabled experimental features to allow for nextcloud to sync with virtual files. Although I cannot seem to figure out how to turn a non-virtual file back into a virtual file after I am done with it.

Any help is appreciated! Thank you :slight_smile:

macOS Version: 13.4
Nextcloud Desktop: 3.9
Nextcloud: 26.0.2