On the Teams desktop app
From a call, select the …
Select Hold
People on hold won’t be able to see or hear anyone else on the call. Screen sharing is also suspended. Everything will return to its state before the hold when the hold is ended.
Putting a call on hold
From a call select Hold
People on hold won’t be able to see or hear anyone else on the call, they will here hear hold music instead. Everything will return to its state before the hold when the call is resumed.