partner-contact/partner_employee_quantity/views/res_partner_employee_quantity_range_view.xml

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

    <record id="employees_range_action" model="ir.actions.act_window">
        <field name="name">Ranges by quantity of employees</field>
        <field name="res_model">res.partner.employee_quantity_range</field>
        <field name="view_type">form</field>
        <field name="view_mode">tree</field>
    </record>

    <record id="employees_range_tree_view" model="ir.ui.view">
        <field name="name">Quantity of employees ranges tree</field>
        <field name="model">res.partner.employee_quantity_range</field>
        <field name="arch" type="xml">
            <tree string="Ranges by quantity of employees" editable="top">
                <field name="name"/>
            </tree>
        </field>
    </record>

    <menuitem action="employees_range_action"
              id="menu_employees_range"
              parent="contacts.res_partner_menu_config"
              sequence="0"
    />

</odoo>