Using Hostify, you can easily send or receive reservation alterations directly to or from your guests.
Receive alterations - you will receive alterations in the reservations inbox threads. There you will see all of the details of the alteration. You can either Accept or Decline the alteration.
Send alterations - You can simply send an alteration from Hostify with just few clicks. You need to open the reservation's inbox and on the top side of the page, the "Reservation alteration" will be visible.
Once you've clicked it, on the newly appeared window, you will see the alteration details. If you edit any of the fields, the new calculations will appear on the right hand side of the form.
Once everything is adjusted, simply click on "Send" and the alteration will be pushed to Airbnb in a minute.