An iCal (iCalendar) synchronisation is a way to help keep your calendars updated across different channels and lower the risk for overbookings compared to updating the different calendars manually. iCal is a software that allows calendars to communicate their availability with each other. For each calendar that supports iCal, a specific link is created. To have the calendars communicate, they need to be connected.
For example, if you work with Holidu but you also have a private listing on one or multiple other channels, synchronising your iCals will allow all platforms to communicate what days are free and what days are blocked.
When receiving a booking on Holidu, your iCal synchronisation will eventually block those dates also on your other calendars. Please note that this synchronisation can take up to 1 hour.
In order to sync the two calendars, a bridge must be created between them, where the information can travel from one calendar to the other. This can be done by entering the respective calendar iCal link into the other calendar. By pasting the Holidu link into the external calendar, information can travel from Holidu to the external calendar. To have information travel from the external calendar to Holidu, paste the external calendar’s link into the Holidu calendar.
You can refer to this article for an explanation on how to import/export a calendar (iCal) from another provider/channel.