Hi community,
when adding the approval process element, there is an option for the approval to be sent to the Employee's manager.
After this is selected, one needs to specify a record for the employee.

Problem is that I'm not able to add the Id of the employee or get the approval to be sent to the manager. What is expected to be added in this record?
The id of the employee
The id of the employee's contact
The id of the employee's user?
I've been able to achieve what I want by selecting user, then reading:
->employee->Manager Employee table-> Manager contact table
and adding the contactId of the manager but I would like to get the simple employee manager to work.
Thanks,
Luis