Write some Software

I need a developer for a 1-week job to enhance a Jomres booking extension on a Wordpress site. It is a non-profit website for a vacation home that is owned by a group of owners who want to be able to schedule bookings and take payment for the bookings. There are 10 or so beds in 3 or 4 rooms. The beds can be booked individually, but we also want people to be able to select the rooms and the entire cabin at a premium. Here is the development needed: 1. If a parent/child relationship can be developed economically, that would be ideal. But we at least want a "select all" button that will add a premium to the total cost. 2. The group would like a read-only calendar on the front end of the site that displays the names of the people associated with the booking.