Hi @Zac White ,
As this article described, the computer is considered idle if all the processors and all the disks were idle for more than 90% of the last detection interval.
Basically the Teams client will be updated automatically, it checks for updates every few hours and downloads it. When your computer goes to be idle, it will install the update silently. For the update details of Teams, you could read this article.
Best regards,
Lou
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