[ADD] point_of_sale: How to reprint receipts?

https://docs.google.com/document/d/1xB9y-0thM8MZl5wSSw5g0Am9f8z9YALI-Vn7cfRys2s/edit#

point_of_sale/advanced/reprint.rst

@@ -1,3 +1,44 @@
 ========================
 How to reprint receipts?
-========================
+========================
+
+Configuration
+=============
+
+If you want to allow a cashier to reprint a ticket, go to
+:menuselection:`Configuration --> Settings` and tick the option 
+**Allow cashier to reprint receipts**.
+
+.. image:: media/reprint01.png
+    :align: center
+
+You also need to allow the reprinting on the point of sale. Go to
+:menuselection:`Configuration --> Point of Sale`, 
+open the one you want to configure and and tick the option **Reprinting**.
+
+.. image:: media/reprint02.png
+    :align: center
+
+How to reprint a receipt?
+=========================
+
+On the **Dashboard**, click on **More** and then on **Sales Orders**.
+
+.. image:: media/reprint03.png
+    :align: center
+
+On the orders list, search and click on the order you want to reprint.
+
+.. image:: media/reprint04.png
+    :align: center
+
+On the order, click on reprint.
+
+.. image:: media/reprint05.png
+    :align: center
+
+.. seealso::
+    * :doc:`../shop/cash_control`
+    * :doc:`../shop/invoice`
+    * :doc:`../shop/refund`
+    * :doc:`../shop/seasonal_discount`