From the Home screen, tap Apps > the Apps tab (if necessary) > Calendar .
Tap the date (in the upper-left corner of the screen) to select the type of calender you want to view. Tap Day, Week, Month, Year, or Agenda.
Tap the date for which you want to add an event, then tap the New icon (in the upper-right corner of the screen).
Enter the event name.
Check the date and enter the start and finish times for your event.
Tap each field and enter additional details, as necessary.
You can set Location, All day checkbox, Time zone, Guests, Description, Repeat, Reminders, Show me as, and Privacy.
Tap Save to save the event in the calendar.
Touch and hold a spot on the calendar to quickly save a calendar event on that date. Simply enter the event name and time, then tap Save. You can tap Details and enter more information, or update the event with additional details later.