Have the dealer set it up for you when you pick up the Cayenne. Contact them Monday since it is a bit of a process. They will get a code and should send you a link which you follow to install on your phone and activate.
Porsche Connect is standard for hybrids and an option on others. For the hybrids it allows you to set up charging times. You enter when you are leaving and the Cayenne figures out when to start the charge. There is an option for precooling or prewarming the car but I have not gotten that far.