How to Upgrade/Downgrade and user

To upgrade a user you need to follow these steps, Please note that to do this task you have to be a superuser:

Enter to your account (View)
On the top right you will see a nine square icon, click on it
Then click on Users
Now you are seeing the list of all your users
Search for the user you want to Upgrade/downgrade
1. You can use the search box to help you
When you have the user click on the edit button
Then you are going to see the user information, go to the setting tab
finally, you would see "Access type" you can change between user and superuser

For more information about the users types click here.