To make the changes you use the following fields that are in the "Item information" tab
Examination duration (in rounds) Default = 1 -
Examination duration is the length of the station. A double length station will have value 2.
Note all station lengths must be multiples of a single station length
For example: if you the normal length of a station is 10 minutes (with a Examination duration of 1) then you can make a 20 minute station by setting the Examination duration to 2.
Marking duration (in rounds) Default = 0
If extra time is needed for examiners to mark immediately after seeing a candidate, you can add on marking time in rounds.
Note: we advise that all marking rounds should be of the same length as the examination duration unless all stations have a marking round then this can be different to the examination duration.