You can find the number of check-in and check-out of the day and also the number of arrivals and departures for the next days on the Dashboard

You can also see the list of Arrivals and Departures with more details in the Guests and Reservations tab (expand the left-side panel), in Check-Ins and Departures:

Another option is Bookings list where you can find the list of Check-ins and Check-outs for selected day: