Control of your server means to have an active console or a functional (if installed and configured at the local console), remote control panel or both, at a PC.
An active console is a command interface to a server through 5250 emulation that is currently interacting with the server. A functional remote control panel allows you to perform control panel functions from the PC. Thus, the PC in control becomes the console and can perform remote control panel functions. Only one PC can have control at a time.
If your local console starts in attended mode you have control immediately after you Connect a local console directly attached to the server. When you have control at this local console, you need to be present to grant or refuse control to requesting remote consoles.
If your local console starts in unattended mode, SERVER appears in the Current User field after you Connect a local console directly attached to the server. Operations Console automatically grants control to the first requester (local console or remote console).