Multiple groups using a Regio

Is it possible for more than one coven to use a Regio at the same time? I can’t remember, but I think we did simultaneous farm rituals at E4 as part of the “Landskeeper Magic Assembly Line” and it was fine.

The rules as I understand them. and as Graeme has confirmed them to me. are that any number of groups can do a ritual near the regio and use it for targetting but only *one group at a time *can get the +1 rank bonus.

1 ritual at a time as per

Note that it is ritual use - doesn’t have to be a coven/group using it. Solo ritualists are a thing.