To subscribe to Propertybase Back Office Calendars, please follow these instructions:
Hover the mouse over your profile thumbnail and click the Settings link. (top right of any page).
Select the "View Subscriptions" Link.
From Calendar Subscriptions page, pick the Subscription you want to update and then click the device or application you will be using, then follow the posted instructions and you should be synced
There will also be an option to manually configure the feed.
In the instructions for the subscription, there will be a URL which allows you to manually configure your calendar feed.
Copy the URL and paste it into the appropriate field inside your Calendar app (ie. Google Calendar, iCal, Outlook, etc).