Overtime- / Vacation-Tracker = Know how many work-free-days one has.
It should be possible to enter given Freetime-/Vacation-Days for any person (eg. 25 Days per year. Offical Country-Holiday eg. Christmas not included). Then, in an overview (Dasboard or Report) the selected member can have a look, how many Vacation-days he has left. In that same overview, the whole overtime should also be added. Meaning: in the end, every member can check how many Overtime/Vacation-days he/she has. With the look at only one calculated number everyone can check how many hours/Days he/she has left for leisure.
This is now part of the vacation request extension. More here https://hubplanner.com/vacation-annual-leave-requests-new-resource-request-approval-workflow-added-hub-planner/