Hello, rheotan432.
Changing the Master's Admin in QuickBooks Online is quick and easy. Below are the steps to complete the process.
- Click the Gear icon at the upper right corner and select Manage Users.
- Select the user you wanted to be the Master Admin and hit Edit.
- Under the User Type, choose the Admin.
- An invitation email will then be sent to the user to accept the role.
To get more details about this process, here's an article for your reference: Change your QuickBooks Online master admin user.
The following resources are good references about roles and user types in QuickBooks:
Feel free to drop me a reply below if you need further assistance. I'm more than willing to lend you a hand.