In the early 2000's Mark & Ian Rumsey hosted many workshop meetings at their Tring Workshop, ostensibly for the Thames Valley members, but some came from far and wide. There was a large parking area that could accommodate many Land Rovers.
No serious workshop work was done, for safety reasons, but the odd thing was fixed in the yard and there were exchanges of parts etc.
Basically is was a social in the garage with tea, sandwiches and chat
This is different to a group going round to a member's house/garage/yard and undertaking a specific job, engine swap, chassis repair, re-wiring.
Workshop meetings are now (shortly) possible after lock-down restrictions are lifted.
All it needs is for someone to provide a venue, and a date.
Usually they are organised on an area basis for local members.
There is no reason why they can't be held anywhere.
I would say just be careful if you are doing a specific task and not to have too many hands on the job.
The organiser/host needs to be clear what the agenda is.
If you go to someone's house then the risk is theirs and it's not a club event.
Pictures from a Mark & Ian Workshop Meeting in 2004 ....