Make the phone field required in the donation form of Charitable on child sites.
Snippet Type
Execute on Child Sites
Snippet
function ed_charitable_make_donation_form_field_required( $fields ) {
$fields['phone']['required'] = true; // Change to false to make it not required.
return $fields;
}
add_filter( 'charitable_donation_form_user_fields', 'ed_charitable_make_donation_form_field_required' );