If CONTROL is called for the first time on a serverdb that was installed without CONTROL, the Systemdba is requested first because he holds the system tables. For the additional installation of CONTROL, the existing local serverdb must be in WARM mode.
Fig.: Input Screen for Systemdba Definition
After acknowledging the screen, the CONTROL system files and system tables are created, and the Main Screen of CONTROl is displayed.
WARNING !
If you leave the screen with 
, the systemdba is unknown to CONTROL and the system tables cannot be created.