[ADD] accounting: How to manage invoices & payment in multiple currencies

https://docs.google.com/document/d/1v2XnQme5xmycWk67r11umoid_67ZT99j714lwxilfew/edit

accounting/others/multicurrencies/invoices_payments.rst

@@ -1,3 +1,120 @@
 =======================================================
 How to manage invoices & payment in multiple currencies
 =======================================================
+
+Overview
+========
+
+Odoo provides multi-currency support with automatic currency gross or
+loss entry adjustment. There are a few things Odoo has been to ease the
+user’s life.
+
+All the account transactions will be done using the company currency.
+However you can see two extra fields with the journal entry where
+secondary currency and amount will visible. You can create
+multi-currency journals of force a specific currency.
+
+When creating an invoice, the currency can be changed very easily;
+however Odoo takes the company currency as a default assignment. It will
+convert all the amounts automatically using that currency.
+
+Configuration
+=============
+
+Enable Multi-Currency
+---------------------
+
+For information about enabling Multi-Currency, please read the document:
+:doc:`how_it_works`
+
+Configure your journal
+----------------------
+
+In order to register payments in other currencies, you have to remove
+the currency constraint on the journal. Go to the accounting
+application, on the journal, click on :menuselection:`More --> Settings`.
+
+.. image:: media/invoice01.png
+   :align: center
+
+Check if the currency field is empty or in the foreign currency in which
+you will register the payments. If a currency is filled in, it means
+that you can register payments only in this currency.
+
+.. image:: media/invoice02.png
+   :align: center
+
+Multi-currency invoices & Vendor Bills
+======================================
+
+Now that you are working in a multi-currency environment, all
+accountable items will be linked to a currency, domestic or foreign.
+
+Invoices
+--------
+
+You are now able to set a different currency than the company one on
+your sale orders and on your invoices. The currency is set for the whole
+document.
+
+.. image:: media/invoice03.png
+   :align: center
+
+Vendor Bills
+------------
+
+You are now able to set a different currency than the company one on
+your purchase orders and on your vendor bills. The currency is set for
+the whole document.
+
+.. image:: media/invoice04.png
+   :align: center
+
+Multi-currency Payments
+=======================
+
+In the accounting application, go to :menuselection:`Sales --> Payments`. Register the
+payment and indicate that it was done in the foreign currency. Then
+click on **Confirm**.
+
+.. image:: media/invoice05.png
+   :align: center
+
+The journal entry has been posted but not allocated.
+
+Go back to your invoice (:menuselection:`Sales --> Customer Invoices`) and click on
+**Add** to allocate the payment.
+
+.. image:: media/invoice06.png
+   :align: center
+
+Multi- Currency Bank Statements
+===============================
+
+When creating or importing bank statements, the amount is in the company
+currency. But there are now two complementary fields, the amount that
+was actually paid and the currency in which it was paid.
+
+.. image:: media/invoice07.png
+   :align: center
+
+When reconciling it, Odoo will directly match the payment with the right
+invoice. You will get the invoice price in the invoice currency and the
+amount in your company currency.
+
+.. image:: media/invoice08.png
+   :align: center
+
+Exchange Rate Journal
+=====================
+
+Go to :menuselection:`Adviser --> Journal Entries` and look for the **Exchange
+Difference** journal entries. All the exchange rates differences are recorded in it.
+
+.. image:: media/invoice09.png
+   :align: center
+
+.. seealso::
+	
+	* :doc:`how_it_works`
+	* :doc:`exchange`