What is My Calendar?
My Calendar shows events added to the Calendar tool from all of the sites in which you are a member. In addition, you may also create individual, private calendar entries that are only visible to you from your Home site.
Click Options to customize calendar display. (Optional)
You may customize the appearance of your Calendar by selecting the Options button.
Select custom preferences and click Update.
For more information on display preferences, please see How do I customize my Calendar display in a site's Overview page?