To add a user to the opengear console server login to https as a user in the admin group. Go to the users and groups page and click on the add user button. If they aren't in the users or admin group they can still login to ssh and connect to the ports they are allowed to use with pmshell, or do other stuff if they have /bin/sh as their login shell, but can't use the https interface. Members of the users group can use the https interface as a terminal for their ports and do power management if they have power management ports. Members of the admin group can do anything on the https interface, including change the ssh key for root login.