There are just a few options to adjust in your Calendar app; you can find these in the Settings app. Just touch Settings from your Home screen.
Scroll down to the Mail, Contacts, Calendars tab and touch it. Scroll down to Calendars,
and you will see three options. The first option is a simple switch to
be notified of New Invitation Alerts – if you receive any meeting
invites, it is good to keep this set in the default ON position.
Next, you can choose your time zone. This setting should reflect your Home
settings from when you set up your iPad. If you are traveling, however,
and want to adjust your appointments for a different time zone, you can
change this to any other city you would like.
1. Changing the Default Calendar
We mentioned earlier that you can have multiple
calendars displayed on your iPad. This option allows you to choose which
calendar will be your Default calendar.
That means that when you go to schedule every new appointment, this calendar will be selected by default.
If you wish to use a different calendar – say, your Work calendar – you can change that when you actually set the appointment.