ETC Obsession II User Manual page 306

Logging off
Security settings
290 Chapter 25 Multiple operators
A Primary Operator may log himself off the system. A Primary Operator
may also log off another Primary Operator who has an equal or lower
access level.
In the Security Setup display, use the up/down arrows to highlight the
operator to be logged off. Then press [S5], Log Off System, [Enter] and
when asked to confirm, press [Enter] a second time. If you are trying to
log off another Primary Operator who has a higher access level, your
request will be denied.
All Security Log-In configuration data is stored on the hard drive, recallable
from the hard drive and printed with all other input/output configuration
data. It is not, however, storable to diskette. Security Log-In settings are
unaffected by a system reset operation.