Dear Dean_063
Hope this email finds you well.
Thanks for sharing the above concern in Microsoft forum community, pleasure to assist.
It sounds like you're experiencing some challenges with the new Teams calendar view. The new calendar in Microsoft Teams offers a streamlined scheduling experience, but some features might be a bit different from the old version and some features are also still under development phases,
To isolate the issue may we inquire.
---- Does this happen with all the meetings or just specific meeting please
---- Please check teams on the web browser Https://teams.microsoft.com/ to see if the issue reproduces, please
---- Please share with us a screenshot of how the teams calendar looks like when you try to add agenda in the new teams.
I ran quick check from our side, and we are able to add the agender by double clicking on the existing meeting, then at the bottom, you will see option "Add meeting notes" Click on it and you will be able to add the agenda.


However, if you can't access this in teams on the web as well, please note that this feature is still at the roll out stage, many features have not yet been fully implemented until it's officially launched. New Teams Calendar Microsoft 365 Roadmap
As troubleshooting step, if you notice this function is available on your team's web browser calendar, please try to reset your team to fix any bug or glitch
for windows
- Type settings in the search box, and then select the Settings app from the results.
- Select Apps > Installed apps and then type Microsoft Teams in the search box.
- Locate the New Microsoft Teams app from the results, select the More options button (...) on the right, and then select Advanced options >In the Reset section, select Reset >Restart Teams.
For Mac
You can do this by quitting Teams, then deleting the cache files from the following location:
rm -rf ~/Library/Group Containers/UBF8T346G9.com.microsoft.teams
rm -rf ~/Library/Containers/com.microsoft.teams2
Reference: Clear Teams cache - Microsoft Teams | Microsoft Learn
We look forward to your update in regard to the suggestion and information required incase issue persist for further investigation.
Appreciate your patience with this