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Make a FaceTime audio call using Messages on Mac
In Messages, you can start a FaceTime audio call to one or more people who have a Mac, iOS device or iPadOS device that meets these requirements.
Note: You need to sign in to FaceTime using your Apple ID and make sure FaceTime is on.
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In the Messages app
on your Mac, do one of the following to choose who you want to start the audio call with:
Select a conversation for the person or group.
Click the Video button
in the top-right corner of the window.
Choose FaceTime Audio to immediately start the call.
When someone includes you in a Group FaceTime call, you can join the call from the Messages conversation. Just click Join in the FaceTime message bubble. (See Group FaceTime requirements.)