questions!

[BBR-APBT]

Make a new plugin and add something like this. The hook location for the plugin should be forumdisplay_start.

if (THIS_SCRIPT == forumdisplay) {
    $templater = vB_Template::create('your_template');
    $template_hook['navbar_end'] .= $templater->render();
}

Make a new template add your stuff to that template and change your_template(in the above code) with the name of the template you just created.