pos/pos_cash_move_reason/views/view_pos_session.xml

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

     <record id="view_pos_session_form" model="ir.ui.view">
        <field name="model">pos.session</field>
        <field name="inherit_id" ref="point_of_sale.view_pos_session_form"/>
        <field name="arch" type="xml">
            <!-- Add new buttons Buttons -->
            <xpath expr="//sheet/div[@name='button_box']" position="inside">
                <button class="oe_stat_button" name="button_move_income"
                    type="object" icon="fa-level-down"
                    attrs="{'invisible': ['|',
                        ('display_move_reason_income', '=', False),
                        ('state', 'not in', ['opened', 'closing_control'])]}">
                    <div class="o_field_widget o_stat_info">
                        <span class="o_stat_text">Put</span>
                        <span class="o_stat_text">Money In</span>
                        <field name="display_move_reason_income" invisible="1"/>
                    </div>
                </button>
                <button class="oe_stat_button" name="button_move_expense"
                    type="object" icon="fa-level-up"
                    attrs="{'invisible': ['|',
                        ('display_move_reason_expense', '=', False),
                        ('state', 'not in', ['opened', 'closing_control'])]}">
                    <div class="o_field_widget o_stat_info">
                        <span class="o_stat_text">Take</span>
                        <span class="o_stat_text">Money Out</span>
                        <field name="display_move_reason_expense" invisible="1"/>
                    </div>
                </button>
            </xpath>
            <!-- Hide obsolete Buttons -->
            <xpath expr="//button[@name='%(point_of_sale.action_pos_box_in)d']" position="attributes">
                <attribute name="groups">pos_cash_move_reason.group_pos_old_actions</attribute>
            </xpath>
            <xpath expr="//button[@name='%(point_of_sale.action_pos_box_out)d']" position="attributes">
                <attribute name="groups">pos_cash_move_reason.group_pos_old_actions</attribute>
            </xpath>
        </field>
    </record>

    <record id="point_of_sale.action_pos_box_in" model="ir.actions.act_window">
        <field name="groups_id" eval="[(4, ref('pos_cash_move_reason.group_pos_old_actions'))]"/>
    </record>

    <record id="point_of_sale.action_pos_box_out" model="ir.actions.act_window">
        <field name="groups_id" eval="[(4, ref('pos_cash_move_reason.group_pos_old_actions'))]"/>
    </record>

</odoo>