The advanced parent child select list is complicated to set up but does give you more power to associate fields to each other.

Some examples for reasons to use this type of fields could be make -> model options for cars, or state -> city for realestate ads. But you can use your imagination and create these for all sorts of sites.

In this example we will be using cars with a make model choice, but again this can be changed to whatever suits your site.

1. We recommend creating the child fields first that way you only have to add/edit the parent one time. So create a new child option named Ford Model and enter all the Ford models. Then save and you will be returned to the main extra fields page.
2. Now create another child option named Toyota Model and enter the Toyota models then click submit.
3. After you hit submit you will again be returned to the main extra fields page with a list of all the extra fields.
4. From this screen get the id number of the two fields you just created. We will say these are number 1 and 2 respectively.
5. Now create a new parent option named Make and enter Ford and Toyota as the options. Beside each one of these you will see an input field which is where you would enter the child id from the previous screen. So in our case we would enter Ford 1 and Toyota 2.
6. Please keep in mind that a parent option must relate to a child and can not relate to another parent. It will only go one level deep.