This article will assist you with the step-by-step guide for how to set up a retention policy and apply it to the content in Microsoft 365 especially Microsoft Teams channel messages and Teams chats.
Step 1: Login Office 365 Admin Portal using account with Global administrator role for the organization. Global administrator role is needed to create, edit, and delete the retention policies within the organizations.
Step 2: Browse to Microsoft 365 compliance center.
Step 3: Click on the Policies settings at the sidebar.
Step 4: Expand Data and click on the Retention option.
Step 5: Click on the New retention policy option.
Step 6: Enter the Name and Description for the retention policy then press on the Next button.
Step 7: Choose the locations to apply this retention policy. For instance, we like to set the retention policy for Team channels messages and Teams chats. After toggle On the status, it will apply to all Channels and all users by default. Press on the Next button to proceed.
Step 8: Choose the retention period then press on the Next button.
Step 9: Review the detail of retention policy, acknowledge that the configuration meets your requirements then press on the Submit button. The retention policies will start to apply to the location specified when the policies were created.