The Add report to a group feature is currently in beta and available to a limited group of users. It allows us to identify and resolve issues or gather valuable feedback before its release, Tom.
We appreciate your feedback on the beta feature, as it helps our engineers refine QuickBooks Online and better align it with your business needs.
In the meantime, can you provide more details about the types of reports you successfully added to the group and those that were not? This information will help us better understand what might be causing the limitation.
Feel free to reach out if you need anything else. We’re here to help.