How is 'Actual Elective Time' calculated in the Theatre Utilisation Session Details table?

To find the session details table, navigate to Surgery > Theatre Effectiveness > Utilisation and select the 'Session Details' button. 'Actual Elective Time' is Column O.

"Actual Elective Time" refers to the total amount of used elective minutes in the session, plus minutes for early start, plus minutes over run, and excludes changeover.