How can I set up my new iMac to do handoff?
I have two iMacs and one doesn't have the "iPhone Cellular Calls" check box in the Face time preferences window. The one that won't work is a late 2013 i7 that should support handoff. I have configured my first generation Mini to work fine.
The other iMac which has the needed check mark box is older (mid 2011) and may not even support handoff but I get the phone icon to kick on to make calls but nothing happens.
How can I set up my new iMac to do handoff-I need the check box.