[ADD] accounting: How to track costs of purchases, expenses, subcontracting?

https://docs.google.com/document/d/1ejUeI-mc0ecdlak01VLSK9JkzbS1PvguS3mXeV-H4oc/edit#

accounting/others/analytic/purchases_expenses.rst

@@ -1,3 +1,160 @@
-=============================================================
+==========================================================
 How to track costs of purchases, expenses, subcontracting?
-=============================================================
+==========================================================
+
+Overview
+========
+
+Thanks to analytical accounting we can track costs of purchases,
+expenses and subcontracting in the accounting module.
+
+We'll take the following example. We sold a consulting package for a
+customer. The package is all inclusive meaning no extra cost can be
+added. We would however like to follow which cost were attached to this
+transaction as we need to pay for purchases, expenses, and
+subcontracting costs related to the project.
+
+Configuration
+=============
+
+The following modules needs to be installed to track cost. Enter the app
+module and install the following apps:
+
++---------------------------------+---------------------------------+---------------------------------+
+| .. image:: media/purchase01.png | .. image:: media/purchase02.png | .. image:: media/purchase03.png |
++=================================+=================================+=================================+
++---------------------------------+---------------------------------+---------------------------------+
+
+Please note that the applications provided by these apps only allows us
+to **track** the costs. We won't be able to automatically re invoice
+those costs to our customers. To track and **re invoice costs** you
+should install the Sales management app as well.
+
+.. image:: media/purchase04.png
+   :align: center
+
+You can refer to the following docs about reinvoicing costs through
+analytical accounts: :doc:`../../../purchase/purchases/rfq/subcontracting`
+
+Enable Analytical accounting
+----------------------------
+
+Next step is to activate the analytical accounting. In the accounting
+app, select :menuselection:`Configuration --> Settings` and thick the Analytic
+accounting box.
+
+.. image:: media/purchase05.png
+   :align: center
+
+Moreover, scroll down and thick the **Analytic accounting for purchases**
+box.
+
+.. image:: media/purchase06.png
+   :align: center
+
+Don't forget to save our changes.
+
+Create an Analytical account.
+=============================
+
+First of all you should create an Analytical account on which you can
+point all your expenses. Enter the accounting app, select
+:menuselection:`Configuration --> Analytic Accounts`. Create a new one. In this
+case we will call it "consulting pack" for our customer Smith&Co.
+
+.. image:: media/purchase07.png
+   :align: center
+
+We will point all our costs to this account to keep track of them.
+
+Record an expense
+=================
+
+We start by booking an expense. Our
+IT technician had to take a train to go see our customer. He paid for
+his ticket himself.
+
+Create an expense product
+-------------------------
+
+We first need to create an expense product. Enter the **Expense** module,
+Click on :menuselection:`Configuration --> Expense Products`. Create a new product
+called Train ticket and set the cost price to 15.50 euros. Make sure the **Can be
+expensed** box is ticked.
+
+.. image:: media/purchase08.png
+   :align: center
+
+Book the expense
+----------------
+
+Enter the Expense module, click on :menuselection:`My expenses --> Create`. Select the
+Train ticket product and link it to the analytical account discussed
+above.
+
+.. image:: media/purchase09.png
+   :align: center
+
+Submit to manager and wait for the manager to approve and post the
+journal entries.
+
+Create a Purchase Order linked to the analytical account
+========================================================
+
+Purchase Product
+----------------
+
+We also need to buy a software for our customers. In the purchase app
+create a purchase order for the software product. (please
+refer to the following document: :doc:`../../../purchase/overview/from_po_to_invoice`).
+Within the line we can link the product's cost with the analytical
+account. Specify the order line and select the correct analytical
+account. Confirm the sale.
+
+.. image:: media/purchase10.png
+   :align: center
+
+Accept the delivery and enter the invoice. Once the invoice is entered the cost
+price (**Vendor Price** field) will be booked in the analytical account.
+
+Subcontracting
+--------------
+
+The purchase module can be used in the same way as seen previously to
+handle subcontracting. if we purchase a service from another company we
+can re invoice this cost by linking the purchase order line to the
+correct analytical account. We simply need to create the correct vendors
+product.
+
+For more information about subcontracting please refer to the following
+document: :doc:`../../../purchase/purchases/rfq/subcontracting`
+
+.. note::
+
+	You can also track cost with timesheets, see: :doc:`timesheets`
+
+Track costs in accounting
+=========================
+
+Now that everything is booked and points to the analytical account.
+Simply open it to check the costs related to that account.
+
+Enter the accounting module, click on :menuselection:`Advisers --> Analytic Accounts
+--> Open Charts`.
+
+Select "consulting pack - Smith" and click on the cost and revenue
+button to have an overview of all cost linked to the account.
+
+.. image:: media/purchase11.png
+   :align: center
+
+.. note::
+
+	If you would like to have the revenue as well you should
+	invoice the Consulting Pack in the Invoice menu and link the invoice
+	line to this same analytical account.
+
+.. rst-class:: text-muted
+
+| Written by Cédric Vandermeersch (Odoo)
+| Proofread by Benjamin Stiens (Odoo)

purchase/purchases/rfq.rst

@@ -6,3 +6,4 @@ Request for Quotatations
    :titlesonly:
 
    rfq/create
+   rfq/subcontracting

purchase/purchases/rfq/subcontracting.rst

@@ -0,0 +1,3 @@
+=====================================================
+How to manage sub-contracting (purchase of services)?
+=====================================================