A project's calendar shows all appointments. You can switch between several views, navigate through the periods and filter the appointments.
Views & navigation
Top right you switch between Month, Work week, Week, Day and Agenda. With Today, Back and Next you move through the periods.
Search & filter
Use the search field to find appointments by title; use the filter icon (funnel) to narrow down the appointments shown.
You create a new appointment with Create event – see Creating an event.