A feature page can only tell you so much about a calendar. At the top of the scheduling page there is a sample week of appointments, and beside it a Try the calendar button that takes you into the real one.
The preview on the page
The week on the page is an illustration, not your data and not the live calendar. It is still interactive: one row of buttons filters by charting status (All charting, Not started, In progress, Complete) and a second filters by billing (All billing, Needs attention, Not invoiced, Unpaid, Paid). The two combine, and appointments that don't match fade back. A line beside the filters counts how many visits are left to chart this week. Both filters are the ones on the real calendar, so the preview shows how you would find what still needs charting or checking.
What the button opens
Try the calendar goes to the demo practice and lands on its calendar. You get a demo session straight away, with no sign-up, in a shared practice filled with fake patients and sessions. Other visitors can be in it at the same time, and it resets every night, so don't enter anything real.
The button can only land inside the demo practice. Anywhere else, the demo entry page sends you to the demo's home instead. Next to it, Try online booking opens the booking walkthrough described in Try online booking in your browser, and a line under both points to the way to set up your own practice.