Like most functions in the Untis application, the scheduling dialogue communicates with all other windows.
When you open a lesson view (or a timetable) and select a lesson, the scheduling dialogue automatically displays the active lesson and, vice versa - the lesson window and the timetable always show the lesson selected in the scheduling dialogue.
Locking the view
Activate the button <Keep the source lesson> to lock the display of the scheduling dialogue..
Window in the background
As a rule, you can bring a window to the front (i.e. activate a window) by clicking on any part of the window. The scheduling dialogue allows you to suppress this behaviour by activating the option 'Window in the background' under <Settings>.