pos/pos_payment_terminal/views/account_journal.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

    <record id="view_account_journal_form" model="ir.ui.view">
        <field name="model">account.journal</field>
        <field name="inherit_id" ref="point_of_sale.view_account_journal_pos_user_form"/>
        <field name="arch" type="xml">
            <group name="amount_authorized" position="after">
                <group name="payment_mode_group" attrs="{'invisible': [('type', '!=', 'bank')]}">
                    <field name="pos_terminal_payment_mode"/>
                </group>
            </group>
        </field>
    </record>

</odoo>