[MOV] pos: restructuration of pos toctree

task-3284514

+ update of access pos settings
Task-3256407

closes odoo/documentation#4239

Signed-off-by: Castillo Jonathan (jcs) <jcs@odoo.com>
Co-authored-by: Jonathan Castillo <jcs@odoo.com>
Co-authored-by: Loredana Perazzo <lrpz@odoo.com>

content/applications/sales/point_of_sale/receipts_invoices.rst

@@ -0,0 +1,110 @@
+=====================
+Receipts and invoices
+=====================
+
+Receipts
+========
+
+Set up receipts by going to :menuselection:`Point of Sale --> Configuration --> Point of Sale`,
+selecting a POS, and scrolling down to the :guilabel:`Bills & Receipts` section.
+
+To **customize** the **header** and **footer**, activate :guilabel:`Header & Footer` and fill in
+both fields with the information to be printed on the receipts.
+
+To **print receipts** automatically once the payment is registered, enable the :guilabel:`Automatic
+Receipt Printing` setting.
+
+.. image:: receipts_invoices/receipt.png
+   :alt: POS receipt
+
+.. seealso::
+   - :doc:`restaurant/bill_printing`
+
+Reprint a receipt
+-----------------
+
+From the POS interface, click :guilabel:`Orders`, open the dropdown selection menu next to the
+search bar, and change the default :guilabel:`All active orders` filter to :guilabel:`Paid`. Then,
+select the corresponding order and click :guilabel:`Print Receipt`.
+
+.. image:: receipts_invoices/print-receipt.png
+   :alt: Print receipt button from the backend
+
+.. note::
+   You can filter the list of orders using the search bar. Type in your reference and click
+   :guilabel:`Receipt Number`, :guilabel:`Date`, or :guilabel:`Customer`.
+
+
+Invoices
+========
+
+In Point of Sale, you can issue and print invoices upon payment at the cash register or retrieve all
+the past invoiced orders.
+
+Set a customer
+--------------
+
+First, you need to open a session and set your customer. Open the **POS interface** by going to
+:menuselection:`Point of Sale --> New session --> Open session`. Then, click :guilabel:`Customer` to
+access the list of **customers**.
+
+.. image:: receipts_invoices/select-customer-ui.png
+   :alt: customer selection and creation button
+
+From there, you can either set an existing customer by clicking their name or create a new one by
+clicking :guilabel:`Create`. Doing so opens a customer creation form to fill in with their
+information. Click :guilabel:`Save` to validate and set this new customer.
+
+.. note::
+   - You can also **edit** a customer's information by clicking :guilabel:`Details`.
+   - If you did not set your customer during the order, you can do so at the payment screen by
+     clicking :guilabel:`Customer`.
+
+Invoice a customer
+------------------
+
+Once an order is done, click :guilabel:`Payment` to move to the **payment screen**. Click
+:guilabel:`Invoice` underneath the customer's name to enable issuing and printing invoices upon
+payment.
+
+.. image:: receipts_invoices/invoice-button.png
+   :alt: button to generate an invoice in POS
+
+Select the payment method and click :guilabel:`Validate`. The **invoice** is automatically issued
+and ready to be downloaded and/or printed.
+
+Retrieve invoices
+-----------------
+
+To retrieve invoices from the **POS dashboard**,
+
+#. access all orders made through your POS by going to :menuselection:`Point of Sale --> Orders -->
+   Orders`;
+#. to access an order's invoice, open the **order form** by selecting the order, then click
+   :guilabel:`Invoice`.
+
+.. image:: receipts_invoices/invoice-smart-button.png
+   :alt: invoice smart button from an order form
+
+.. note::
+   - **Invoiced orders** can be identified by the :guilabel:`Invoiced` status in the
+     :guilabel:`Status` column.
+   - You can filter the list of orders to invoiced orders by clicking :guilabel:`Filters` and
+     :guilabel:`Invoiced`.
+
+QR codes to generate invoices
+-----------------------------
+
+Customers can also request an invoice by scanning the **QR code** printed on their receipt. Upon
+scanning, they must fill in a form with their billing information and click :guilabel:`Get my
+invoice`. On the one hand, doing so generates an invoice available for download. On the other hand,
+the order status goes from :guilabel:`Paid` or :guilabel:`Posted` to :guilabel:`Invoiced` in the
+Odoo backend.
+
+.. image:: receipts_invoices/order-status.png
+   :alt: order status change
+
+To use this feature, you have to enable QR codes on receipts by going to :menuselection:`Point of
+Sale --> Configuration --> Settings`. Then, select the POS in the :guilabel:`Point of Sale` field,
+scroll down to the :guilabel:`Bills & Receipts` section and enable :guilabel:`Use QR code on
+ticket`.