AdvanceCM supports calendar synchronization with any channel that allows iCal import/export, even if the channel isn't listed natively in the system. This guide walks you through connecting such "Unknown" channels using two-way iCal sync to keep your availability up to date and avoid double bookings.
Step 1: Create an Unknown Channel Connection
Navigate to the Channels module from the top menu bar.

In the Channels List view, click the + Add Channel button.

In the Channels Overlay, click the iCal tab.
Choose Unknown from the list and click Connect.

AdvanceCM allows two-way availability sync with any channel that supports iCal links. You can import their availability into AdvanceCM and export your availability to them.
Step 2: Import the Channel’s Calendar into AdvanceCM

Scroll down to the Imported Calendars section and click Add.
Complete the required information:

Calendar Name: Give your calendar a recognizable name.
Channel Name: Enter the name of the channel or select "Unknown."
Calendar URL: Paste the iCal URL provided by the channel.
Rental: Select the rental that should be updated with the imported events.
Step 3: Export AdvanceCM Calendar to the Channel
Scroll to the Exported Calendars section and click Add.

Select the same Rental you used above.
Click Export.

In the popup, copy your AdvanceCM iCal URL.

Paste this URL into the appropriate calendar import section in your external channel.
Once both import and export steps are completed, your availability in AdvanceCM will sync with the external channel and vice versa.
You can repeat this process for any calendar-enabled platform that supports iCal syncing—even if it's not listed in AdvanceCM.