If you need assistance while connected to GridGammon, you can talk to a sysop online (if you are unable to connect to GridGammon, you can contact GridGammon support at support@GridGammon.com).
To identify GridGammon sysops who are currently online, create a custom filter by choosing Custom... from the Filter popup menu (or choose the View > Custom... menu command). Check Support staff and/or Tournament staff in your A list and disable all items in your B list.
To ask a sysop for assistance, just open a chat window and talk to him or her.