Business Ownerpersonnelclient

Your Three Booking Addresses

Booking is three different intentions, so it is three pages rather than one page that changes shape depending on what you have set up.

Details

/business/{slug}/bookavailableslot is the open one: pick a person, pick a time, no account needed. This is what the View Availability buttons on your public pages point at, and it stays the same whether or not you use event types.
/business/{slug}/bookanevent lists every event type you offer, each linking to its own page — its own length, its own hours, its own address to share. It only exists while you have at least one.
/business/{slug}/sessions is for enrolled clients spending pack credits. It asks them to sign in first, because a session comes out of a pack and the page cannot know whose credits to spend until it knows who is asking.
That last address used to redirect to the availability page. A saved link still gets you there: the sign-in page offers open times alongside it, one click away.
The names differ because packs sell 'sessions' and an event type can be named one too. Two addresses a single letter apart meant opposite things: one free to book, the other spending a pack credit.