You can sync Cobot with Outlook by using Google as an intermediary to keep them in sync.
Make a private Google calendar that you will use for keeping the two systems synced together.
Link Outlook to Google with the Google Apps Sync for Microsoft Outlook®
Link Cobot to Google with our Google Calendar Sync
Now any new bookings made in Outlook will show up in Cobot, and your Cobot bookings will show up in Outlook.
Note: There is a 5-minute delay in the sync from Google into Cobot, so there is a small window where someone in theory could double-book if going from both platforms at the same time, but in our experience that hasn't been a problem.