solved Using Button Functions

{jrCore_item_list_buttons module="ntTracker" item=$item exclude="update"}

Using {jrCore_item_create_button module="jrAudio" view="create" profile_id=$_profile_id title="Create Audio"}

{jrCore_item_list_buttons module="xxTrackme" item=$item exclude="jrCore_item_update_button,jrCore_item_delete_button"}

<?php
/**
 * @copyright 2017 no one
 * @author no one <noone [at] nowhere [dot] com>
 */

// make sure we are not being called directly
defined('APP_DIR') or exit();

/**
 * meta
 */
function xxTrackme_meta(){
    $_tmp = array(
        'name'        => 'Trackme',
        'url'         => 'trackme',
        'version'     => '1.0.1',
        'developer'   => 'Noone, &copy;' . strftime('%Y'),
        'description' => 'Just adds some icons and its own buttons to lists',
        'category'    => 'custom'
    );
    return $_tmp;
}

/**
 * init
 */
function xxTrackme_init(){

    jrCore_register_module_feature('jrCore', 'quota_support', 'xxTrackme', 'on');

    $_tmp = array(
        'title'  => 'Item Halt Button',
        'icon'   => 'halt',
        'active' => 'on'
    );
    jrCore_register_module_feature('jrCore', 'item_list_button', 'xxTrackme', 'xxTrackme_item_halt_button', $_tmp);

    jrCore_register_event_listener('jrCore', 'exclude_item_list_buttons', 'xxTrackme_exclude_item_list_buttons_listener');

    return true;
}

/**
 * the button for lists
 */
function xxTrackme_item_halt_button($module, $_item, $_args, $smarty, $test_only = false){
    if ($test_only) {
        return true;
    }
    $_rt = array(
        'url'     => '#',
        'onclick' => "alert('hello world')",
        'icon'    => 'halt',
        'alt'     => 'the alt text for the halt button here'
    );
    return $_rt;
}

/**
 * listener
 */
function xxTrackme_exclude_item_list_buttons_listener($_data, $_user, $_conf, $_args, $event)
{
    // remove the UPDATE button
    $_data['jrCore_item_update_button'] = true;
    // remove the DELETE button
    $_data['jrCore_item_delete_button'] = true;
    return $_data;
}