The IBIS 2 is not very different from its predecessor. The operations correspond to the old system. Only the display of delays is completely new.
Please set line 76 and route 2.
Activate any appropriate schedule via the game menu.
Now the IBIS displays the time since or until the next stop. A negative number indicates that you are too early.
Now please set two stops ahead (key [Q]). The IBIS controls announcements, indoor and outdoor displays and adjusts the delay display to the current stop.
Set two stops back again and disable the schedule.