Additional meeting and call-related features and issues within Microsoft Teams for business
Dear James,
I hope you are doing well!
After research and testing, I notice that Microsoft Teams does not provide a direct way to create a webinar that allows only internal users and specific guests while excluding all other external users.
Since this feature is not currently available, consider providing feedback to Microsoft. Many features are developed based on user feedback, and your input could help prioritize this functionality in future updates, to do so, go to Feedback in your Teams app and selecting Suggest a Feature or by posting on Teams Feedback Portal. This tool allows you to describe the feature in detail and submit it directly to our product development team for review. I will do the same on my end.
Please note that us as the community team and the Microsoft product development team are separate. The product development team is responsible for designing, developing, and maintaining Microsoft products. They work on implementing new features, fixing bugs, and making improvements based on user feedback and other factors.
We sincerely appreciate your patience and cooperation.
Best regards,
Inema |Microsoft Community Moderator