I have a MacBook Air operating macOS Sierra 10.13.6 and FaceTime operating 4.0 (3080). But I cannot use Group FaceTime. Can this be solved?
MacBook Air 13″, macOS 10.13
Read here Use FaceTime on your Mac - Apple Support
So that link does answer your question as your macbook doesn't have the required OS.
I am sorry to say that what you have done is not answered thew question.
The link contains this:
If you're using macOS Mojave 10.14.3 (build 18D109) or later,
you can use Group FaceTime to chat with up to 32 people. Each person's
tile automatically increases in size whenever someone speaks.
So my questiin was not about macOS Mojave, but macOS Sierra.
As this is not referred to I assume that it does not support Group FaceTime.
I might assume that macOS Mojave is only avialble on certainMacBooks?
Thanks for confirming what I suspected from the outset but did not find anything actually saying it just as you didn't until pressed.
That why I provided you the link, so you can read for yourself and if you had any other question that might be answered within the link.
Group FaceTime problem using macOS Sierra 10.13.6
