Hi there, brubaker-jeff.
Thanks for reaching out for support here in the Community. I'd like to provide some information on your question about user account management in the mobile app.
The mobile app is handy for on-the-go use. You have the ability to send invoices and manage bank accounts right at your fingertips. Currently, the mobile app doesn't offer the ability to manage your account users. This specific function would need to be done through an online browser.
I've got an article for you that coves the details of managing customer users in your QuickBooks Online account. You can check it out here: https://quickbooks.intuit.com/community/Account-management/Add-and-manage-custom-users/m-p/186731.
Another write-up you may want to look over offers information on the different types of users and permissions that can be set for them. You can view it here: https://quickbooks.intuit.com/community/Account-management/Understanding-user-types-and-permissions/....
Keep up the great work and please let me know if there's anything else I can assist with.
