How do I add a co-owner to my quickbooks checking account?

Hey there, @sean96. 

Thanks for taking the time to reach out to the QuickBooks Community. I'm happy to lend a hand with updating your QuickBooks checking account.

To change your business info:

1. Sign in to your QuickBooks Payments account.
2. Select Account, then Account Profile.
3. Go to Account Holder/Business Information, then click on Edit.
4. Change your business info as you need to, then tap on Submit.

That should do the trick. For additional information about this process, check out Update business and account info for QuickBooks Payments. 

Please don't hesitate to let me know if you have any questions or concerns. Take care and have a great day!