Custom Fields
The first step is to create custom people or donation fields.
Add other native and custom fields to your form. Add the following tag to the page (replacing slug_1/2/3 with your custom field's slug in the order you want them to appear on the form):
fields: slug_1|slug_2|slug_3
Native NationBuilder field slugs currently available (on signup pages):
employer
occupation
donations_to_raise_amount - to collect a person's fundraising goal