If you want to sync Timetastic booking into your Office 365 calendar, just follow these steps:
1) Click on "My Calendar" from the main menu
2) Select ‘Calendar Integrations’
We are looking at the lower section "Feed URL's"
3) Select ‘Copy URL’ for the feed you wish to subscribe to, to copy the link to your clipboard.
5) Go into your calendar in office 365. Then, choose to add a calendar from the internet from the add calendar menu at the top:
6) In the "link to the calendar" field, paste your link, then click save.
That's it! All of your Timetastic holidays should now be showing in your Office 365 Calendar