wordpress WPrental theme AJAX booking functionality to be change

need customisation on wordpress theme WP rentals [login to view URL] To customise WP rental wordpress script to become like Airbnb for hosting experiences [login to view URL] you will be working on a ready made wordpress theme WP rentals. Things to customise are - Current calendar booking system needs to be totally change to become like that of Airbnb experiences calendar. [login to view URL] (Allow timings to be listed and created on calender, change check-in check out date to just one date availability for user to select) - Change ajax search functionality variables from check-in, check-out to select only 1 date availability when user search - change all posting field variables from 'properties' to 'activities'. Customisation of posting fields must be made consistent on frontend, backend, email settings etc. (some fields are unwanted as it applies to properties only eg. area sqft, no. of rooms etc ,these need to be remove) Changes are to be made on Child theme of wordpress, no editing to the main parent theme. online doc below [login to view URL] see attach zip file for full details NO RELEASE OF FUNDS UNTIL YOU COMPLETE THE TASK.