Subscribe once and every session appears in your own calendar, in your own timezone, with the Zoom link attached. When a time changes, your calendar updates on its own.
Having problems? Copy the following and add the calendar to your phone:
Calendar address (iPhone, Outlook, Google)
Google Calendar ID
iPhone: Settings → Calendar → Accounts → Add Account → Other → Add Subscribed Calendar, then paste the address. Google: on a computer, open Google Calendar → Other calendars → + → From URL, then paste the address.