1.    Login into Plesk.

2.    Look at the left hand side navigation bar and click Users.

3.    At the Users page, you have to click the User Roles to go to the user roles page. 

4.    Next, you may select one of the Role name that you want to edit.

5.    In this page you may change the User role name also with the rights to control the function.

6.    After that you will need you press OK to complete your editing process.

7.    Lastly, it will prompt you with a successful message if your edit was successful.