As we've 'system' user at POS which run irrespective of number of license users available at the moment of login and allows admin user to log in for troubleshooting system configuration. Same concept is required at HO. where currently HO admin user checks number of available license at the moment. And doesn't allow admin user to login if number of user license are not available. This happens when all users are connected and admin users want to log in to check system config issues and manage modify configuration.