Prerequisite: You have purchased a license and received a license key via e-mail.
The same license key can be activated by the number of users that has been purchased.

Each licensed user follows these steps to activate the Shared Calendar license in Microsoft Teams.

  1. Go to your Shared Calendar tab in one of your channels or add a new shared calendar if it is not already there.
    In the Shared Calendar app, click PRO Upgrade

  2. Copy the license key into the input field.

  3. Click Activate Online.
    Done! You can create and manage as many calendars as you need.