Hi,
For making the update quantity on hand button invisible to your custom group, you can follow the example below

<record model="ir.ui.view" id="product_template_form_view_procurement_button">
    <field name="model">product.template</field>
    <field name="inherit_id" ref="stock.product_template_form_view_procurement_button"/>
    <field name="arch" type="xml">
        <xpath expr="//button[@name='%(stock.action_view_change_product_quantity)d']" position="attributes">
            <attribute name="groups">!specify here the user group that no need to see the button</attribute>
        </xpath>
    </field>
</record>

Regards