So, there are a lot of fields to be set for the calendar. You should take time to learn the 131 settable fields. There are 84 input settings on the Element and an additional 47 during initialization.
To Use the calendar:
Place the Calendar Element on any screen or within a group. You must keep in mind that the calendar does not come to life on it's own. You must run the "Initialize Calendar workflow Action" but that comes later.