[ADD] inventory: How to choose the right flow to handle receipts?

https://docs.google.com/document/d/1n8fYnHnUA0RpHlCp0aMBwes6u0QGkYy84D8pZ1Xxl9c/edit

inventory.rst

@@ -9,5 +9,6 @@ Inventory
 
    inventory/overview
    inventory/delivery
+   inventory/incoming
    inventory/settings
    inventory/management

inventory/delivery/dropshipping.rst

@@ -52,7 +52,7 @@ Configuring drop-shipping
 -   Open the menu :menuselection:`Inventory --> Configuration --> Settings`. 
     Go to **Location & Warehouse**, locate the **Dropshipping**
     option and tick the box **Allow suppliers to deliver directly to
-    your customers**. Then, click on *Apply**.
+    your customers**. Then, click on **Apply**.
 
 .. image:: media/dropshipping06.png
    :align: center
@@ -79,7 +79,7 @@ How to send products from the customers directly to the suppliers
 .. image:: media/dropshipping01.png
    :align: center
 
--  Open the menu :menuselection:`Purchases --> Purchase --> Requests for Quotation`.
+-  Open the menu :menuselection:`Purchases --> Purchases --> Requests for Quotation`.
    The draft purchase order is automatically created from the
    procurement with the drop-shipping route. Once the order is
    confirmed, you will see that one shipment has been created.

inventory/incoming.rst

@@ -0,0 +1,11 @@
+==================
+Incoming Shipments
+==================
+
+.. toctree::
+   :titlesonly:
+   :glob:
+
+   incoming/handle_receipts
+   incoming/two_steps
+   incoming/three_steps

inventory/incoming/handle_receipts.rst

@@ -0,0 +1,72 @@
+================================================
+How to choose the right flow to handle receipts?
+================================================
+
+Overview
+========
+
+Depending on factors such as the type of items you receive, the size of
+your warehouse, the number of receipt you register everyday... the way you
+handle receipts to your customers can vary a lot.
+
+Odoo allows you to handle receipts from your warehouse in 3 different
+ways:
+
+-  **One step**: Receive goods directly in stock.
+
+-  **Two steps**: Unload in input location then go to stock.
+
+-  **Three steps**: Unload in input location, go through a quality control
+   before being admitted in stock.
+
+Odoo uses **routes** to define exactly how you will handle the different
+receipt steps. The configuration is done at the level of the warehouse.
+In standard, the reception is a one step process, but changing the
+configuration can allow to have 2 or even 3 steps.
+
+The principles are the following:
+
+1. **One step**: You receive the goods directly in your stock.
+
+2. **Two steps**: You receive the goods in an input area then transfer them
+   from input area to your stock. As long as the goods are not
+   transferred in your stock, they will not be available for further
+   processing.
+
+3. **Three steps**: In many companies, it is necessary to assess the
+   received good. The goal is to check that the products
+   correspond to the quality requirements agreed with the
+   suppliers. Adding a quality control step in the goods receipt
+   process can become essential.
+   
+   You receive the goods in an input area, then transfer them into
+   quality area for quality control. When your quality check
+   process finishes then you can move the goods from QC to stock.
+   Of course, you may change the quantity and only transfer to
+   Stock the quantity that is valid and decide that you will
+   return the quantity that is not good.
+
+Configuration
+=============
+
+One step flow
+-------------
+
+This is the default configuration in Odoo.
+
+Two steps flow
+--------------
+
+Please read documentation on :doc:`two_steps`
+
+Three steps flow
+----------------
+
+Please read documentation on :doc:`three_steps`
+
+.. seealso::
+    * :doc:`../delivery/inventory_flow`
+
+.. todo::
+    Add section when available
+    -  How to analyse the performance of my vendors?

inventory/incoming/three_steps.rst

@@ -0,0 +1,3 @@
+=============================================================
+How to add a quality control step in goods receipt? (3 steps)
+=============================================================

inventory/incoming/two_steps.rst

@@ -0,0 +1,3 @@
+===========================================================
+How to unload your shipment to an input location? (2 steps)
+===========================================================