All Employees must be Joomla users.
Please use the User Manager and create the user (or edit if already exists).
Assign the user to a user group of your preference. You may wish to assign all company employees under a specific user group i.e HR or MEPRO HR or HR Local, which would be the child of the low access level user group 'registered', so to avoid the inheritance of major access.
Select New User (or edit an existing) and fill in all required fields.
Select Tab HR and enter the Date of Joinment (Employment), Date of Retirement and Date of Birth, in the format yyyy-mm-dd (year, month, day).
Save and close.
Repeat this procedure for all the company employees.