flectra/addons/digest/views/digest_views_inherit.xml

<?xml version="1.0"?>
<flectra>
    <record id="digest_digest_view_form_inherit" model="ir.ui.view">
        <field name="name">digest.digest.view.form.inherit</field>
        <field name="model">digest.digest</field>
        <field name="inherit_id" ref="digest.digest_digest_view_form"/>
        <field name="arch" type="xml">
            <xpath expr="//page[@name='kpis']" position="after">
                <page name="how_to" string="Add/Remove digest?" groups="base.group_no_one">
                    <div>
                        <button type="action" class="oe_highlight" name="%(digest.digest_custom_fields_action)d" string="Add Customized Digest"/>
                        <button type="action" name="%(digest.digest_custom_remove_action)d" string="Remove Customized Digest"/>
                    </div>
                </page>
            </xpath>
        </field> 
	</record>
</flectra>