Thanks for the links.
So the easiest way I found out: create an empty file called "ssh" without an extension and save it to the boot partition of RPi's SD card. Then RPi would boot up, automatically delete the empty file and enable SSH.
But I opened up the pre-assembled PH device, and there is no sd card.
And I'm still flummoxed at how to access into the RPi OS to enable ssh.
Am I missing anything?
j.
EDIT: I'm on a non-admin Mac OS account. Somehow I can't SUDO anything. It doesn't seem my other admin password works.