If you or your measure staff need to book out time as 'unavailable' for private appointments or annual leave etc you can now do this in the measure calendar. 

Click on the relevant day, and in the popup click on 'add unavailability'

Choose the measurer it applies too and give it a title (optional) and either choose all day or a start & finish time.

Once completed, please hit 'save'.

You should now see the 'unavailability' on the measure calendar.