Google Calendar

1. Go to calendar sharing settings. Settings menu for a calendar will appear when you hover over the calendar name on the left sidebar.
2. Click the menu button and select "Settings and sharing"
3. At the bottom of the page you'll see "Secret address in iCal format" — Copy and paste the address in that field onto the "Address of the iCal calendar" form on your "Edit profile" page. Note: We need the private address in order to display accurate availability data.

Microsoft Outlook

1. Select Publish this calendar from the Calendar menu.
2. Check the settings in the window that opens, and then select Start Publishing.
3. Two addresses show up in the form. Copy the top of these two (Link for subscribing to this calendar) and paste it into the form to your venue.

Checkfront

You will find the feed under Settings at iCal.

More detailed instructions are available on Checkfront's own pages.

Other booking systems

You can ask your company's IT managers if it's possible to get an iCal feed out of your booking software.