Delete (i.e. de-schedule) periods using one of the following options:
•By double clicking on an active period
•By clicking on the <Delete period> button
•By pressing the <DEL> key
•Via the context menu (right mouse button)
•Using drag & drop in the period details window
Deleting periods of a row
Click on <Delete periods of one row> if you wish to delete the entire timetable row of a particular element (e.g. class 1a)..
Delete, Activate lesson
If you want to delete a non-active period and re-schedule it immediately, click on <Delete, Activate Lesson>. This unschedules the lesson and automatically activates it so that you can schedule it in a different slot straight away. Alternatively, use the key combination CTRL+X.