[IMP] pos: update the register customers section

task-3357882

closes odoo/documentation#4662

Signed-off-by: Castillo Jonathan (jcs) <jcs@odoo.com>

content/applications/sales/point_of_sale.rst

@@ -22,8 +22,8 @@ From the **POS dashboard**, click :guilabel:`New Session` to start a POS session
 :guilabel:`Resume` if the session was already open.
 
 .. note::
-   Multiple users can be connected to the same session at the same time. However, the session can
-   only be open once on the same browser.
+   :doc:`Multiple users <point_of_sale/employee_login>` can be logged into the same session at the
+   same time. However, the session can only be opened once on the same browser.
 
 .. _pos/sell:
 
@@ -48,28 +48,18 @@ Once an order is completed, proceed to checkout by clicking :guilabel:`Payment`.
 
 .. _pos/customers:
 
-Register customers
-==================
+Set customers
+=============
 
-Registering your customers gives you the ability to grant them various privileges such as discounts,
-loyalty program, specific communication. It is also required if they want an invoice and registering
-them makes any future interaction with them faster.
+You can create and set customers from an :ref:`open POS session <pos/session-start>`. Registering
+your customer is necessary to :doc:`collect their loyalty points and grant them rewards
+<point_of_sale/pricing/loyalty>`, automatically apply the :doc:`attributed pricelist
+<point_of_sale/pricing/pricelists>`, or :ref:`generate and print an invoice
+<receipts-invoices/invoices>`.
 
-From your session interface, use the customer button.
-
-.. image:: point_of_sale/customer-button.png
-
-Create a new one by using this button.
-
-.. image:: point_of_sale/customer-add.png
-
-You will be invited to fill out the customer form with their
-information.
-
-.. image:: point_of_sale/customer-form.png
-
-Use the save button when you are done. You can then select that customer
-in any future transactions.
+To access the list of customers, click :guilabel:`Customer` on the POS interface. Then, select a
+customer or create a new one by clicking :guilabel:`Create`, completing the form, and saving.
+Lastly, click :guilabel:`Set Customer` to set the selected customer.
 
 .. _pos/refund:
 

content/applications/sales/point_of_sale/receipts_invoices.rst

@@ -32,6 +32,8 @@ When you use it, you can then reprint your last receipt.
 
 .. image:: receipts_invoices/reprint03.png
 
+.. _receipts-invoices/invoices:
+
 Invoice from the PoS interface
 ==============================