While the user is on-line, the SysOp can perform several actions, by using the SysOp keys:

<Ctrl-Left-Arrow>             Lower or Raise the security level of the
<Ctrl-Right-Arrow>            user who is currently online.  Only the
                              levels you previously configured in PROCFG
                              can be selected.
Up/Down                       Raise/Lower the current user's time left.
                              The time subtracted/added is not restricted
                              to this session!
Alt-C   [Chat]                Start a chat with the user. The chat may be
                              ended by pressing <Esc>.
Alt-J   [Jump]                Jump to DOS. If 'Swapping' was set to 'Yes'
                              in PROCFG, the ProBoard session will be
                              swapped to disk or EMS, thus making all
                              memory available to the DOS commands you
                              want to execute.  You can return from the
                              shell by entering EXIT at the DOS prompt.
Alt-H   [HangUp]              Hangs up the phone, throwing the user off-
                              line immediately (very unfriendly)!
Alt-L   [LockOut]             Hangs up the phone AND sets the user's
                              level to 0, thus making sure he/she cannot
                              log in any more (very very unfriendly)!
Alt-N   [SysOp Next]          Creates a semaphore file called
                              SysOpNXT.SEM in the ProBoard system
                              directory.  Also will play the music file
                              SysOpNXT.MUS when user logs off so you are
                              aware your BBS is free.
Alt-E   [Edit]                Allows you to edit the user online.  The
                              editor is similar to the editor in ProCFG.
Alt-I   [Image]               Appends an image of the screen to the file
                              IMAGE.TXT in the ProBoard system directory.
Alt-R  [Reset]                Resets the chat request status. This will
                              stop the flashing of the status line.
Alt-S  [Static]               What can I say.  Useful in combination with
                              the ALT-H to help you, the friendly SysOp,
                              free up your board when needed.  (somewhat
                              friendlier) ;-)
Alt-Y  [No Chat]              Makes ProBoard not sound the page music if
                              the user online when you press this, pages
                              you.  Comes in very handy when you see that
                              user who ALWAYS wants to chat is logging on
                              to your BBS.
Shift-F1                      Shows a help-screen with all the SysOp
                              macros available.  (registered version
                              only)
F1                            Shows a help-screen with all the SysOp keys
                              available.
PgUp/PgDn                     Shows additional information about the
                              current user on the status line.  You can
                              also display a particular status by
                              pressing F2-F10.
Home                          Shows the normal status line after using
                              PgUp/PgDn.
F2                            Shows the user's name, level, time left and
                              time online.
F3                            Shows the user's handle and flags.
F4                            Shows the user's city and phone numbers.
F5                            Shows statistics about the current user.
F6                            Shows the user's comment line.
F7                            Shows system information.
F8                            Shows the chat reason if the user tried to
                              page the SysOp earlier.
F9                            Shows the name and login time of the last
                              caller.
F10                           Shows the time used and Kbytes downloaded
                              today. It also displays the date of birth
                              of the current user.

Furthermore, there are 10 programmable hotkeys (SysOp macros). They can be configured in ProCFG using the F10 option.