Creation/Management/Remote Control
RC stands for RemoteControl. The Remote Control is a tool that comes with the GraalOnline Client that can be used by high level staff members on all servers to manipulate major aspects of the server. With the Remote Control, you can, with the correct rights: Manipulate levels, NPCs, classes, server options, bans, player attributes, account information... However, most of the items listed are not available to the average person. You must have a Gold account status to access the Remote Control on Gold Servers or Hosted/Private Servers.
If your Remote Control is messing up (Disconnecting you from servers) simply open the Graal Client, log in and go to the Updates tab and click on RemoteControl2. Then Click reinstall and Remote Control should be fixed.