NOTE: Please follow these steps from the Calendar's Owner Account.


Step 1: Go to Outlook Web (https://outlook.office.com/mail/inbox)

Step 2: Click on the 'Calendar' icon


Step 3: Click on the three dots for the calendar you want to share


Step 4: Click on 'Sharing and permissions'


Step 5: Enter the users you would like to give access to


Step 6: Select the permission you would like the user to have to your calendar


Step 7: Click 'Share'

Step 8: The User you are sharing to will need to accept the invite