Group Booking - Specify fields

I have specified group booking. I need to have 5 fields for each registrant:

First Name, Last Name, Age, Grade, School

Two questions:

1. How do I set up the fields that show in the group registration? It is currently showing the first 3 in the list but I don't see how to change it.
2. I want to have these fields in a table rather than going down the page. Is there a way to do this? Or, if I need to code it, what file would the code go in?

Hi

1. How do I set up the fields that show in the group registration? It is currently showing the first 3 in the list but I don't see how to change it.

If I understand your question correctly, you can edit the custom field, set Display In of that custom field to "All" or "Both Group Member form and Individual Billing Form" and it will be displayed on Group members form

2. I want to have these fields in a table rather than going down the page. Is there a way to do this? Or, if I need to code it, what file would the code go in?

=> What table you are talking about ? The registrant list ? If so, you need to modify code in two files:

administrator/components/com_eventbooking/view/registrants/view.html.php
administrator/components/com_eventbooking/view/registrants/tmpl/default.php

Also, look at the files in components/com_eventbooking/views/registrantslist folder. I think there are code which you can learn and reuse it

Tuan