In the Add/Edit Lesson form, set Conference Link to Google Meet.
A Meet link will be attached to the lesson (and included on synced Google Calendar events).
Enable two-way sync with Google Calendar and accept the required permissions if you want the link mirrored into Google Calendar.
Students/parents will see the link in their event details.
Zoom/Teams is not currently available in Cadence Calendar.
You can also leave the Conference Link as None and paste links into the description if needed.