I put the MF and HF VarAC freqs into a spreadsheet to plot out which Slots would cause potential QRM to other users such as the Packet 105 Network, NCDXF Beacon Network, Voice segment. Also annotated are Slots that would put you out of band. I am using the US allocations for this, so your country could be different.
I didnt even tackle 60M due to that huge mess.
The exception to Part 97.221(b) is when the Control Operator is at the station. Then the station is under direct control. Using 2300/2750, relay requests and messages can pass with Control Operator oversight.
When in 2300/2750 mode VarAC or VARA Chat, any automatic function other a beacon would need to be INSIDE the 97.221(b) windows unless under direct control.
Maybe have the "I am Away" button disable initiating any RF traffic, including the beacon.
Be Safe to All,
Bret n4bta