iCal shares unavailable date ranges between Salisea and channels such as Airbnb or Booking.com. Set up both directions for each unit:
Never reuse one unit’s feed for another unit.
In the channel, open the listing’s calendar availability or calendar-sync settings and copy its export link.
In Salisea:

Imported entries block availability and appear as imported calendar events. They are controlled by the source channel.
Under Export links, select the same unit and the platform, then choose Generate link. Copy the generated URL.
Return to the channel’s calendar-sync settings, choose its import-calendar option, paste the Salisea URL, and give the connection a clear name. The Salisea feed contains availability only; it does not publish guest details.
Use a separate export link for each platform so Salisea can show when that channel last fetched it.
Use dates well in the future that have no real guest activity.
Calendar end dates are checkout dates: a range from 20 October to 22 October blocks the nights of the 20th and 21st.
iCal is periodically refreshed, not instantaneous. Sync now fetches an import into Salisea, but each external platform controls when it fetches Salisea’s export. Use Recent syncs, Last synced, and Last fetched by channel to understand the current state.
Keep the feeds active and verify critical availability in both systems before accepting a time-sensitive booking. If a date is wrong, correct it in the system that owns the event, then refresh the connection.
You have now completed the core Salisea setup. Return to the user guide index whenever you add a property, unit, mailbox, or channel.