To share a calendar with another user in Outlook Web App, please follow the steps below:
1. Log into Outlook Web App at http://mail.secureowaonline.com
2. Select the Calendar icon in the bottom left corner.
3. In the left-hand navigation pane, select the calendar you would like to share.
4. Click Share above the calendar.
5. Click Share This Calendar.
6. In the To field, enter the recipient's e-mail address.
7. Select the calendar content that you would like to share.
8. Enter a Subject and body text as needed.
9. Click Send.