If an employee has the System Admin Role or the Authorization "Roles Administration" assigned to their account, they can create new roles and assign any authorizations to it.
Click Settings in the upper right hand corner. Choose Employee on the left hand side and then User Role Management. You can also type "User Role Management" in the global search box.
From this page you can Create, Edit, and even Delete Roles. Keep in mind that if you delete any roles, it will effect the employees linked to those.
If you are creating a new role, first type in the name you would like, the symbol or legend, a pretty color, and hit SAVE.
Next, click on the role you just created and press the toggle button next to the authorizations this role should have. The authorizations will automatically save to your new role.