gform_add_pagination_event.php

<?php
add_filter( 'gform_pagination_event_category', 'gf_form_category_pagination_category', 10, 4 );
function gf_form_category_pagination_category( $category_name, $form, $source_page_number, $current_page_number ) {

	return 'Forms';
}
add_filter( 'gform_pagination_event_action', 'gf_form_action_pagination_action', 10, 4 );
function gf_form_action_pagination_action( $action_name, $form, $source_page_number, $current_page_number ) {

	return "Submission";
}