Before you begin:
If you don't already have your Subscription URL from the Detail Bookie calendar subscription set up page, follow this guide first:
Add calendar feed to Office365
View your calendar at https://outlook.office.com/calendar.
Click the Add calendar button and choose the Subscribe From Web option.
Paste your Subscription URL for your Detail Bookie calendar subscription feed, give your calendar a name, and press the Import button.
Wait a moment for your calendar items to appear in your Office365 calendar.