There appears to be no way for a "Standard User" to be given permission to use 3rd-party apps in QuickBooks Online. I need to use an app, but I cannot be granted Admin-level permissions. Does anybody have a workaround for this?
I wrote this in my other response, but I'll add it here in hopes of increasing its visibility to Intuit: it makes no sense to limit the access of third-party app to admins only. The whole point of apps is to expand the functionality of QuickBooks. Restricting their access only makes them less useful.