account_payment_view.xml

<odoo>

        <record id="view_account_payment_form_inherited" model="ir.ui.view">
            <field name="name">account.payment.form.inherited</field>
            <field name="model">account.payment</field>
            <field name="inherit_id" ref="account.view_account_payment_form" />
            <field name="arch" type="xml">
                <xpath expr="//button[@name='action_post']" position="after">
                    <button name="%(action_debit_check_wizard)d" string="Debit check" type="action" attrs="{'invisible': ['|', '|', ('payment_method_code', '!=', 'check_printing'), ('state', '!=', 'posted'), ('is_move_sent', '=', False)]}"/>
                </xpath>
            </field>
        </record>

</odoo>