If you are hosting on Hipcamp in addition to Hookhub, it's important that your calendars are properly synced to prevent double bookings. When set up properly, calendars will be synced regularly to keep availability up to date and we will always sync your calendars right before a new Hipcamp booking is put through to make sure no double bookings occur.
You can also choose just to add your Hookhub calendar to your Hipcamp or vice versa. Below you can see how to import each way or both.