Do I turn IRIS Clarity on before I start my call/meeting, or can I do that at any point?

You can turn IRIS Clarity on or off at any point in your call. Most likely, you'll want to keep it on.

🚀 Pro tip: If you, or a user on your call, are dialling in from a conference room with multiple people, you’ll need to adjust your IRIS Clarity settings. See Will IRIS Clarity work if used in a group meeting or will voices be unevenly broadcasted?