Step 1: Login to your webmail account using the URL : http://webmail.oryon.net
Step 2: Click the calendar tab.
Step 3: You will see the new window.
Step 4: Click the Add a Shared Calendar option under Shared Calendar.
Step 5: In the Email Address field, enter the email address that you wish to share your calendar.
Step 6: Once you entered the email account, click Add option.
Step 7: Finally, click Save option.
