Login to SEQTA and go to your Teaching Workspace
In either the My Day view:
or in the Traditional Calendar view
you will see a blue manage swaps icon 
Click this icon and the following pup-up will appear:
on the left side you can find the room/location you would like to use for your class and whether the room is free. For ease of use you can search for the room/location you are interested in by using 
If the room is available (free) then simply click save and you have booked that room for your lesson.
The changes will be reflected in your timetable - 
