How to set up Availability Exchange
Settings > Availability Exchange
Availability Exchange is a way of sharing availability with other online services such as TripAdvisor.
To sign up with Availability Exchange
Register for an Availability Exchange ID by clicking Register.
Select to share availability with all subscribers or specific subscribers. (Note: You must have an account with the subscribers in order to share availability. For example, to share availability with TripAdvisor, you must have a TripAdvisor account.)