How to assign employee HR role?

Now I see it. Here are the steps for any one else trying to figure it out:
1. Log in to the Administrator profile.
2. Click on "Employee" tab.
3. Click on "Web Account" subtab.
4. Click on "ENABLED" at bottom centre
5. Select the employee you want assign the HR Role to.
6. Under the HR Role field drop done, select "HR.my Manager" to assign the role to them.
7. Click the green check mark in the top right hand corner
Done

I'm still not clear on the 2 required fields in the "Employee" tab > "HR Roll" subtab (one is "Code" and the other is "Description"). There are no directions on what to write in these fields. What is supposed to be written in each of them?