Your public schedule can now tell connected websites and apps that a session
requires workshop entry or course enrollment before a client tries to book it.
When a public course or workshop page is available, the schedule also supplies
the right destination for that client.

This is an additive integration improvement. Existing schedule integrations
keep their current booking-availability behaviour, while updated integrations
can replace a misleading regular Book action with a workshop or course action.
Turning off the workshop-entry safety switch also removes the schedule hint.