Make a video call using Messages on Mac
You can start a FaceTime video call in Messages to one or more people who have a Mac, iOS device, or iPadOS device that meets these requirements.
In the Messages app
on your Mac, send a message to the person or group you want to start a video call with.To search for contacts and content in conversations, click in the Search field in the top-left corner and enter what you’re looking for. Or, choose from the suggested contacts, links, photos, and more.
You can’t send a message to or call someone who’s restricted by communication limits in Screen Time.
Click the Details button
, then click the Video button 
next to the group name or the individual’s name to immediately start the call.If you don’t see the Video button, you may need to sign in to FaceTime. You can choose which audio input device to use in Sound preferences and which camera to use from the FaceTime Video menu.
To start a FaceTime call using a different email address or phone number listed in your friend’s contact card, click and hold the Video button
.
When someone includes you in a Group FaceTime call, you can join the call from the transcript. Just click Join in the FaceTime message bubble. (See Group FaceTime requirements.)
When someone who doesn’t have a camera answers a video call, they’re represented by a monogram and a sound level meter instead of video.