flectra/addons/point_of_sale/views/product_view.xml

<?xml version="1.0" encoding="utf-8"?>
<flectra>
    <record id="product_template_search_view_pos" model="ir.ui.view">
        <field name="name">product.template.search.pos.form</field>
        <field name="model">product.template</field>
        <field name="inherit_id" ref="product.product_template_search_view"/>
        <field name="arch" type="xml">
            <filter name="filter_to_sell" position="before">
               <filter name="filter_to_availabe_pos" string="Available in POS" domain="[('available_in_pos', '=', True)]"/>
            </filter>
        </field>
    </record>

    <record id="product_template_action_pos_product" model="ir.actions.act_window">
        <field name="name">Products</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">product.template</field>
        <field name="view_type">form</field>
        <field name="view_mode">kanban,tree,form</field>
        <field name="context" eval="{'search_default_filter_to_availabe_pos': 1}"/>
    </record>
    <record id="product_product_action" model="ir.actions.act_window">
        <field name="name">Product Variants</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">product.product</field>
        <field name="view_type">form</field>
        <field name="view_mode">kanban,tree,form</field>
        <field name="context" eval="{'search_default_filter_to_availabe_pos': 1}"/>
        <field name="domain" eval="[]"/>
        <field name="search_view_id" eval="False"/> <!-- Force empty -->
        <field name="view_id" ref="product.product_product_tree_view"/>
        <field name="help" type="html">
            <p class="oe_view_nocontent_create">
                Click to add a new product.
            </p><p>
                You must define a product for everything you sell through
                the point of sale interface.
            </p><p>
                Do not forget to set the price and the point of sale category
                in which it should appear. If a product has no point of sale
                category, you can not sell it through the point of sale
                interface.
            </p>
        </field>
    </record>
    <record id="product_category_action" model="ir.actions.act_window">
        <field name="name">Internal Categories</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">product.category</field>
        <field name="view_type">form</field>
        <field name="search_view_id" ref="product.product_category_search_view"/>
        <field name="view_id" ref="product.product_category_list_view"/>
    </record>

    <record id="product_template_form_view" model="ir.ui.view">
        <field name="name">product.template.form.inherit</field>
        <field name="model">product.template</field>
        <field name="inherit_id" ref="stock.view_template_property_form"/>
        <field name="arch" type="xml">
            <group name="email_template_and_project" position="before">
                <group name="pos" string="Point of Sale">
                    <field name="available_in_pos"/>
                    <field name="pos_categ_id" attrs="{'invisible': [('available_in_pos', '=', False)]}" string="PoS Category"/>
                    <field name="to_weight" attrs="{'invisible': [('available_in_pos', '=', False)]}"/>
                </group>
            </group>
        </field>
    </record>

    <!-- Product Catalog menus and sub menus -->
    <menuitem id="pos_config_menu_catalog"
        name="Catalog"
        parent="point_of_sale.menu_point_root"/>
    <menuitem id="menu_pos_products"
        action="product_template_action_pos_product"
        parent="point_of_sale.pos_config_menu_catalog"
        sequence="5"/>
    <menuitem id="pos_config_menu_action_product_product"
        name="Product Variants"
        parent="point_of_sale.pos_config_menu_catalog"
        action="product_product_action"
        groups="product.group_product_variant"
        sequence="10"/>
    <menuitem id="pos_config_menu_action_product_pricelist"
        parent="point_of_sale.pos_config_menu_catalog"
        action="product.product_pricelist_action2"
        groups="product.group_sale_pricelist"
        sequence="20"/>

    <record id="product_uom_categ_form_view" model="ir.ui.view">
        <field name="name">product.uom.categ.form.inherit</field>
        <field name="model">product.uom.categ</field>
        <field name="inherit_id" ref="product.product_uom_categ_form_view"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='name']" position="after">
                <field name="is_pos_groupable" groups="base.group_no_one"/>
            </xpath>
        </field>
    </record>

</flectra>