1) Login to https://outlook.office.com/owa/?path=/calendar/view/Day using your SSO username and password.
2) Right click on the ‘Calendar’ under the ‘Your Calendars’ option and then click ‘Sharing Permissions’
3) Enter the name of the person you want to grant access too, choose the level of access and then click ‘Share’
4) This will send an email to the named individual, who will then be able to access your calendar from either the web or their email client.
