Follow these steps to set permissions and allow access to a Shared Calendar when the recipient does not have access to a shared email account.
NOTE: sharing must be done from webmail. click link to go to webmail
A) Click this link to learn how to - add calendar.
1) click on the calendar icon
2) right click on calendar to be shared
3) click Sharing and Permissions
4) enter E-mail Address of person the calendar will be shared with
5) choose the level of permissions for the shared calendar
6) click Share to send an email to the recipient.
The recipient will receive an email and the have to accept the invitation. Once this is done the shared calendar will appear in outlook under the calendar tab.