Hi @jacky-coke
Thank you for reaching out to us.
Can you please confirm if you had tried connecting MS-Teams to Freshsales or Freshdesk?
Freshsales <> Ms-Teams Integration K-base: https://crmsupport.freshworks.com/en/support/solutions/articles/50000005995-how-to-connect-freshsales-with-ms-teams- [Allows you to add team Meeting links to the Meetings]
In Freshsales, generally, the following permissions are required to ensure that the integration is successful:

In case there are any blockers on these, you might face some issues.
If you are using Freshdesk, you can follow the instructions available on the following article: https://support.freshdesk.com/en/support/solutions/articles/232273-the-microsoft-teams-app#Integrate-MS-Teams-with-Freshdesk,
This is a Marketplace app and it requires the Microsoft Account Admin to provide some access. If you don’t have the permissions, it will throw the following error:

Can you share more details on this so that we can help you further?
Awaiting your reply.