Hi,@Roger Roger
Thanks for posting your question in the Microsoft Q&A forum.
Based on your description, you seem to be experiencing problems with add-in management.
I will answer your questions in turn.
1.If a user who is a member of the AD group does not want this add-in, can they remove it?
You must be a Global or Exchange administrator to turn plug-ins off or on, edit, delete, and manage access to plug-ins.
2. How can an administrator delete or remove add-ins?
- In the admin center, go to the Settings > Integrated apps page.
- Select the deployed add-in and then select the Configuration tab.
- In the Configuration pane, go to Advanced Settings > Add-ins.
- Select the add-in from the list again.
- Choose Remove Add-In. Remove the Add-in button on the bottom right corner.
- Validate your selections, and choose Remove.
You can refer to this link for details: Manage add-ins in the admin center - Microsoft 365 admin | Microsoft Learn
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