There is an easy and quick way to change the user type roles. 

As an owner you have the possibility to change your staff user type according to your needs. 

You can go to your staff tab in your left menu. Then, choose the person you want to change the user type and click on "View".

Go to the Access option and in the User Type section you can change the person's role.  As an owner you will see their current role and the option to select a different role.