View all Department Events - User will be able to see ALL users within the same Department as well as those in their team.
πNote: Those in their team means those that are on the same reporting line.
If the users are in the same team, reporting to the same managers, as a workaround you can remove their manager and additional manager. To do this:
Click Access Button
then click Employee.
Select the relevant employee then click Personal.
Go to Reports to and click on x the button next to the manager's name.
Enter an Effective Date and a Reason and click Save.
Do the same for Additional Reports To.
πNote: If they don't have a manage and an additional manager, they should be able to see in the company planner only those that share the same department.