Follow the below steps to create and manage User Roles:
Step 1: Click on the "Users" tab. Then click on the "User Roles" section. You will see predefined user roles that are created by Plesk automatically. You can modify them or opt to create your own.
Step 2: To create your own, click on "Create User Role" icon. In the text box labelled "User role name" under the "General" heading type in the role name.
Step 3: Under the "Access to Plesk services" section you can select the permissions you can grant or deny the user. Once completed press OK button.
Now you will see the new role under the list.
If you want to manage or edit User Roles, then please do the following:
1)In the list of the user roles select the Role name to edit the permissions.
2)Select the permissions you want to grant or deny under the "Access to Plesk services" section.
3)Once completed, please press the "Ok" button.