grav-admin-first/user/plugins/admin/themes/grav/templates/partials/tools-scheduler-titlebar.html.twig

<div class="button-bar">
    <a class="button" href="{{ base_url }}"><i class="fa fa-reply"></i> {{ "PLUGIN_ADMIN.BACK"|tu }}</a>
    <button class="button" type="submit" name="task" value="save" form="blueprints"><i class="fa fa-check"></i> {{ "PLUGIN_ADMIN.SAVE"|tu }}</button>
</div>
<h1><i class="fa fa-fw fa-briefcase"></i> {{ "PLUGIN_ADMIN.TOOLS"|tu }} - {{ "PLUGIN_ADMIN.SCHEDULER"|tu }}</h1>