
Hi @NP
If you don't want Teams included when you install Microsoft 365 Apps on devices running Windows or Teams to be added to existing installations of Microsoft 365 Apps when you update to a newer version, you could tick this box.
According to the document, Teams was included as part of new installations of Microsoft 365 Apps. If Teams was already installed on the device, no changes were made to that installation of Teams. In late August, the new Teams began installing with new and existing installations of Microsoft 365 Apps on Windows. Users can opt to try the new Teams using the "Try the new Teams" toggle switch in classic Teams or, admins can bulk deploy the new Microsoft Teams client. For more details, you may refer to the article.
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