odoo-pos-addons/pos_restaurant_table_booking/security/ir_model_access.xml

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

  <record id="restaurant_booking_pos_user" model="ir.model.access">
    <field name="name">Booking restaurant.booking PoS user</field>
    <field name="model_id" ref="model_restaurant_booking"/>
    <field name="group_id" ref="point_of_sale.group_pos_user"/>
    <field name="perm_read">1</field>
    <field name="perm_write">1</field>
    <field name="perm_create">1</field>
    <field name="perm_unlink">1</field>
  </record>

  <record id="restaurant_table_booking_pos_user" model="ir.model.access">
    <field name="name">Booking restaurant.table_booking PoS user</field>
    <field name="model_id" ref="model_restaurant_table_booking"/>
    <field name="group_id" ref="point_of_sale.group_pos_user"/>
    <field name="perm_read">1</field>
    <field name="perm_write">1</field>
    <field name="perm_create">1</field>
    <field name="perm_unlink">1</field>
  </record>

</odoo>