PHOTOS HOW DO I STOP PICTURES I TAKE ON MY IPHONE FROM AUTOMATICALLY TRANSFERRING TO MY IPAD AND MY IMAC

The problem is now fixed, Apple Care failed to tell Me the most basic step, which I admit, I forgot as well, shut off the iPhone, iPad, and iMac, after the change to upstream loading, and re-boot them so the changes can take place, I did, now no more uploading of pictures to all devices! Now I just need to figure out how to delete pictures from one device without them being deleted from all 3 devices!

thanks for your help!

As usual, that didn’t work, spent 2 hours on the phone today with Apple care, they couldn’t help either!