main_pad_board.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <record id="pad_dashboard_action" model="ir.actions.client">
        <field name="name">Dashboard</field>
        <field name="tag">pad_dashboard_tag</field>
    </record>
    <menuitem name="Dashboard" id="pad_dashboard_menu" action="pad_dashboard_action"/>

<!--    <template id="dashboard_assets" name="Dashboard Assets" inherit_id="web.assets_backend">-->
<!--        <xpath expr="." position="inside">-->
<!--            <link href="/idg_board/static/src/css/pad_dashboard.css" rel="stylesheet" type="text/css" />-->
<!--        </xpath>-->
<!--    </template>-->
    <template id="dashboard_assets_2" name="Dashboard Assets 2" inherit_id="web.assets_backend">
        <xpath expr="." position="after">
            <script type="text/javascript" src="/idg_board/static/src/js/pad_dashboard.js"/>
            <script type="text/javascript" src="/idg_board/static/src/js/apexcharts.min.js"/>
            <script type="text/javascript" src="/idg_board/static/src/js/dashboard.js"/>
        </xpath>
    </template>
</odoo>