vracoop_pos_free_balance_v2/views/pos_config_views.xml

<?xml version="1.0"?>
<odoo>

    <record id="pos_config_view_form_inherit_balance" model="ir.ui.view">
        <field name="name">pos.config.form.inherit.balance</field>
        <field name="model">pos.config</field>
        <field name="inherit_id" ref="point_of_sale.pos_config_view_form"/>
        <field name="arch" type="xml">
            <div id="posbox_reference" position="inside">

                <div id="balance_free" class="col-12 col-lg-6 o_setting_box">
                    <div class="o_setting_left_pane">
                        <field name="is_balance_free"/>
                    </div>
                    <div class="o_setting_right_pane">
                        <label for="is_balance_free"/>
                        <div class="text-muted">
                            Active le mode balance libre service
                        </div>
                        <div class="content-group" attrs="{'invisible': [('is_balance_free', '=', False)]}">
                            <div class="row mt16">
                                <label for="balance_id" class="col-lg-3 o_light_label"/>
                                <field name="balance_id" attrs="{'required': [('is_balance_free', '=', True)]}"/>
                            </div>
                            <div class="row mt16">
                                <label for="logo_balance" class="col-lg-3 o_light_label"/>
                                <field name="logo_balance" widget="image"/>
                            </div>
                            <div class="row mt16">
                                <label for="explication_header" class="col-lg-3 o_light_label"/>
                                <field name="explication_header" />
                            </div>
                            <div class="row mt16">
                                <label for="weight_default" class="col-lg-3 o_light_label"/>
                                <field name="weight_default" />
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </field>
    </record>

</odoo>