Hello! I would like to hopefully be able to add a week to one of our already booked weeks next year, but I would only do it if I could get the right date(so the new week’s check in would be on the day of the previous week’s check out). So for example if I have already booked Sept.1-8, and I want to trade a week I put into interval for check in on September 8. How do I do it enter it into an ongoing search? What do I put for the date? I realize it might not ever become available, but I’d like to try. Thanks for any help you can offer.