Just got a new iMac, and have come to realize that whenever I am on the iMac, my phone won't alert me that I have a new text/iMessage. I have all the notifications for the messages turned off on the computer, so not to annoy the rest of the family when their using it, but still want to be able to be alerted when I have a new message. Is there any fix for this, or is it kind of a thing like it is with the watch, where it will only play the notification in one place?