Producing a query on Managers will allow you to see a report of which users in the system have someone reporting to them.
πNote: Only admins and users with edited access rights will be able to access and create queries.
To create a query to see managers:
Click Access Button
then click HR Admin.
Click Queries then click the plus + icon.
Select Employee Details and User Role.
Filter User Role on Equals to Manager and click Save.