RH_family_members.php

//we have to put everything in a function called on init, so we are sure Register Helper is loaded
function my_pmprorh_init()
{
    //don't break if Register Helper is not loaded
    if(!function_exists("pmprorh_add_registration_field"))
    {
        return false;
    }
    //define the fields
    $fields = array();

    $fields[] = new PMProRH_Field(
        "family_member_1",                     // input name, will also be used as meta key
        "text",                         // type of field
        array(
            "size" => 40, // # of characters visible (will scroll left if more characters are entered)
            "label"=>"Family member",   // custom field label
            "class" => "fmember_name", // custom class
            "profile" => true,    // show in user profile
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    $fields[] = new PMProRH_Field(
        "fm_1_email",                   // input name, will also be used as meta key
        "text",                   // type of field
        array(
            "size" => 40,
            "label" => "Email",
            "class" => "fmember_email",
            "profile" => true,
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    
    $fields[] = new PMProRH_Field(
        "family_member_2",                     // input name, will also be used as meta key
        "text",                         // type of field
        array(
            "size" => 40, // # of characters visible (will scroll left if more characters are entered)
            "label"=>"Family member",   // custom field label
            "class" => "fmember_name", // custom class
            "profile" => true,    // show in user profile
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    $fields[] = new PMProRH_Field(
        "fm_2_email",                   // input name, will also be used as meta key
        "text",                   // type of field
        array(
            "size" => 40,
            "label" => "Email",
            "class" => "fmember_email",
            "profile" => true,
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    
    $fields[] = new PMProRH_Field(
        "family_member_3",                     // input name, will also be used as meta key
        "text",                         // type of field
        array(
            "size" => 40, // # of characters visible (will scroll left if more characters are entered)
            "label"=>"Family member",   // custom field label
            "class" => "fmember_name", // custom class
            "profile" => true,    // show in user profile
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    $fields[] = new PMProRH_Field(
        "fm_3_email",                   // input name, will also be used as meta key
        "text",                   // type of field
        array(
            "size" => 40,
            "label" => "Email",
            "class" => "fmember_email",
            "profile" => true,
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    
    $fields[] = new PMProRH_Field(
        "family_member_4",                     // input name, will also be used as meta key
        "text",                         // type of field
        array(
            "size" => 40, // # of characters visible (will scroll left if more characters are entered)
            "label"=>"Family member",   // custom field label
            "class" => "fmember_name", // custom class
            "profile" => true,    // show in user profile
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    $fields[] = new PMProRH_Field(
        "fm_4_email",                   // input name, will also be used as meta key
        "text",                   // type of field
        array(
            "size" => 40,
            "label" => "Email",
            "class" => "fmember_email",
            "profile" => true,
            "memberslistcsv" => true,
            "addmember" => true,
        )
    );
    
    //add the fields into a new checkout_boxes are of the checkout page
    foreach($fields as $field)
        pmprorh_add_registration_field(
            "checkout_boxes", // location on checkout page
            $field            // PMProRH_Field object
        );
    //that's it. see the PMPro Register Helper readme for more information and examples.
}
add_action("init", "my_pmprorh_init");