Dear Till, we have an existing multi-server setup with two ISPConfig servers, both running ISPConfig v3.0.5p8 in master-slave mode. ServerA (Debian 7.9) has all roles (Web, DNS, Mail, Firewall, DB-master). ServerB (Debian 8.6) has Mail, Firewall and DB-slave roles. Would you know if there is a way to add Web role on serverB so that we can extent its usage? We have tried running php -q install.php and reports that the server is already configured. We have tried running php -q update.php but we are not given the option to add roles. Thank you in advance for your support, Panos.