The following steps show how to add a calendar to a shared email account using outlook.
1) select the calendar icon to access the calendars in outlook.
2) right click on the name of the shared email account
3) click on new calendar
4) Create a name for the shared calendar > make sure the shared email account and calendar folder are correct > click OK
The calendar should now appear under the shared email account in the calendar section of outlook.
click link to see directions on sharing and setting permissions for the calendar just created: sharing