Would be very handy to have an option to exclude customers from Technicians rather than have to manage "specific" customers they can access. The larger an Atera instance grows, the more difficult and annoying it is to manage specific exclusions from the list for every group.

Having an option such as "Exclude these customers" from the technician access would be a much quicker and easier option rather than "specific customers" where you have to add every customer and then remove those that users shouldn't access.