I could now add Knowledge, and Topics, but I’m going to skip that step. Just so that I can keep this post simple and focused on the adding the app to Microsoft Teams.

Open Microsoft Temas (desktop). Navigate to the Calendar app within Teams. Click the toggle for "New Calendar" that appears in the upper-right corner of the Teams Calendar app.

Microsoft tried to integrate Skype into Windows, but the writing may have been on the wall once Microsoft launched Teams as a Slack competitor in 2017 — though Teams began strictly as a chat app ...

But Skype's popularity began to fade over the years, due to newer apps like Zoom, Google Meet, Microsoft Teams and Apple’s Facetime. At the app’s peak in 2011, Skype had over 150 million users.

If you’re on the Windows desktop app, you’ll start seeing it on April 11, 2025. For Teams in a VDI environment, the start date is May 6, 2025. For the macOS app, it’ll start on May 15, 2025.