The default database user has dbo permission, if you want to have different mysql database user with different permissions, you can follow the steps below to create them.
1. Login to your Hosting Control Panel.
2. Click "DATABASES" from the top menu.
3. Choose MySql, then Click "Database User Manager" to add new mysql user
4. In the pop up window, select the mysql database with you want to create additional database user for, then fill the new database user info, select the corresponding permission to create it