I wasn't quite sure where to update this since the problem could be the Mac or it could be phone or it could be... I will setup an appointment on the Mac and it doesn't make it to the phone. Than a day or two later, there it is. I verify that the phone is signed into iCloud and that I used the cloud calendar on the Mac, but it's not there (until later). The fact that it does get there a few days later tells me it's setup right. This has happened before and that time I discovered a way to get the phone to refresh itself, but I've forgotten how I did it. I've not noticed this to happen when I setup the appointment on the phone. BTW, I've got a 27" Mac about a year old and an iPhone 6+ and both are current on the OS.