How to share an external drive from Monterey OS?

I have a GRAID external Thunderbolt 3 drive that is connected directly to an M1 Mini running the Monterey OS. The array is formated as HFS+ and runs fine, and has wide open everyone-read/write permissions at the root level. The OS is set up to allow file sharing for this drive.

When I Command-I to see the external drive's info, the "Shared Folder" checkbox is NOT clicked. I can click/enable it, then close the Info dialog. However, the next time you open it with Comand-I, the checkbox for "Shared Folder" is again unchecked. It won't stay enabled once the box is closed, and Info dialog is unlocked and I am the administrator on the system.

At no point will the drive appear to my other windows machines on the network, although I can see the mac itself (via a UNC pathname, i.e. \\mymac on the network). However, the windows machines never see the mac shared drive.

I have other non-M1 macs and pcs on the network and this has always worked fine. What might we be overlooking in this case? Is this something new with the M1 Macs?