Instead of setting it up so you have to allow the customers in the atera portal... allow us to deny as well... or allow us to update the customer allow list for user groups easily by selecting all and removing the ones we dont want...

currently if you already have the group setup and then you go and add all the customers again it will error out saying you already have these customers added...

you have to go back and either figure out what customers have not been added to this group or you have to delete them all and re-add them