Answer
You can set up custom leave types in the program for things like RDOs and Time Off in Lieu by going to Company >> Leave Balance and creating the leave type with the green plus button. Once the leave type exists here, go to Employees >> Leave >> Custom Leave Accruals and use the green plus button to add the newly created leave type to each employee who requires it.
Custom Leave Accruals is available for Australian companies only, so an NZ company can't assign a custom leave type to its employees. For New Zealand companies, see How Do I Handle Leave Types That Are Not In The Leave Dropdown?
