In order to connect its capacity with external portals (channels) via iCal calendar, you need to copy export calendar link from Bentral to the administration of this channel and vice versa - from the channel copy import calendar link to Bentral.
The procedure is as follows:
In your Bentral Control panel under Capacities > Your property > Channel manager tick the channel you want to connect to.
Click on Export / Import calendars (.ics) - a window with a list of your units and fields for exporting / importing calendars will open.
Export Bentral calendar
Click in the box Export link (eg. Airbnb.com) and copy the link (CTRL + C).
On the channel (eg. Airbnb.com) paste this link (CTRL + V) by the unit you want to connect.
Import calendar to Bentral
Copy the calendar link on the channel from which you want to import the calendar to Bentral (CTRL + C).
Paste this link into the Import link (from eg. Airbnb.com) box in Bentral (CTRL + V).
Once you have copied all the links, save it all by clicking Save button.
Reservations will now be transferred from the connected channel to Bentral, while occupied dates will close for new reservations on this channel.
In the Airbnb account go to the control panel (Host > Hosting dashbord) and select Listings from the main menu (https://www.airbnb.com/hosting/listings).
On your listing, click on three horizontal dots on the right side and select Go to calendar.
Above the calendar at the top right click on Availability settings.
Under the Sync calendars click Import Calendar, where you will enter the calendar link from Bentrala.
By clicking on Export Calendar a window with link will open. Copy this link (CTRL + C) and paste it in Bentral (CTRL + V) in Import link (from Airbnb.com) box.