[ADD] accounting: How to pay several bills at once?

https://docs.google.com/document/d/1iv5l1t_RDkLqewmcx4sBW-VLtwXampDMF6WxEiyC78w/edit#

accounting/payables/pay.rst

@@ -6,5 +6,5 @@ Pay supplier bills
    :titlesonly:
 
    pay/sepa
-   pay/wire
    pay/check
+   pay/multiple

accounting/payables/pay/multiple.rst

@@ -0,0 +1,161 @@
+=================================
+How to pay several bills at once?
+=================================
+
+Odoo provides a simple and effective way to handle several bills at
+once, with various quick or complex options. With one single process,
+anyone is able to handle bills and payment in just a few clicks.
+
+Pay multiple bills with one payment
+===================================
+
+Record several payments
+-----------------------
+
+In the following example, we will generate some bills. You can control
+the whole process from your accounting dashboard (first screen you get
+when you open the accounting application).
+
+.. image:: ./media/multiple01.png
+  :align: center
+
+To create a bill, open the Dashboard menu and click on **Vendor Bills**.
+In the Vendor Bills window, click on **Create**.
+
+.. image:: ./media/multiple02.png
+  :align: center
+
+Choose the vendor from which you wish to purchase the product, and click
+on Add an item to add one (or more) product(s). Click on **Save** and then
+**Validate**.
+
+Pay supplier bills, one after the other
+---------------------------------------
+
+.. image:: ./media/multiple03.png
+  :align: center
+
+We will now record a payment for one bill only. Open the bill, then
+click on **Register Payment**. Insert the Payment Method, Date and Amount,
+and click on **Validate**.
+
+.. image:: ./media/multiple04.png
+  :align: center
+
+Once you have validated the payment, the system will automatically
+reconcile the payment with the bill, and set the bill as **Paid**. The
+system will also generate a move from the payment account and reconcile
+it with the expense transaction.
+
+Pay several bills altogether
+----------------------------
+
+In order to illustrate the process thoroughly, create at least 2 more
+bills following the above standing guide. **Make sure all bills come
+from the same vendor.**
+
+.. image:: ./media/multiple05.png
+  :align: center
+
+In the Vendors Bills, select the new bills you have just created by
+checking the box next to each of them. In the Action menu located in the
+middle of the page, click on **Register Payment**.
+
+.. image:: ./media/multiple06.png
+  :align: center
+
+Insert the details of the payment. The system calculated the total
+amount for both bills, but you can modify it freely. Click on **Validate**.
+
+Record the payment, reconcile afterwards
+----------------------------------------
+
+You can also reconcile a payment with bills after the payment has been
+recorded.
+
+First, we need to create a payment
+
+This will handle from :menuselection:`Dashboard -> Bank journal ->
+More Option -> Send Money`
+
+.. image:: ./media/multiple07.png
+  :align: center
+
+Creating payment order with check payment method. Selecting related
+Vendor and amount which remain to pay. After filling all details, we
+will confirm the payment order which will generate payment transaction
+with the system.
+
+.. image:: ./media/multiple08.png
+  :align: center
+
+As you can see, bill payment status show what is posted and what is
+remaining to reconcile.
+
+After receiving bank statement from the bank with payment detail, you
+can reconcile the transaction from the Dashboard. It will automatically
+map the transaction amount.
+
+.. todo:
+	
+	For more detail on the bank reconciliation process, please read the
+	following document
+
+	`*Use cases in the bank reconciliation process?* <https://goo.gl/GvGsZB>`__
+
+Partial payments of several supplier bills
+==========================================
+
+How to pay several supplier bills having cash discounts at once?
+----------------------------------------------------------------
+
+You already learned how to pay bills in various way but what about
+partial payment? We are taking another example where we will do partial
+payment for various bills.
+
+We are creating multiple bills and partially pay them through bank
+statements.
+
+We are adding payment terms which allow some cash discount where vendor
+offer us early payment discount.
+
+.. image:: ./media/multiple09.png
+  :align: center
+
+We are creating the following bills with the assignment of the above
+payment term.
+
+.. image:: ./media/multiple10.png
+  :align: center
+
+We have created the following bills:
+
+.. image:: ./media/multiple11.png
+  :align: center
+
+We will pay the invoices by creating bank statement where we will adjust
+the cash discount our vendor provided under payment terms.
+
+.. image:: ./media/multiple12.png
+  :align: center
+
+Before reconciling this bank statement, we need to create one statement
+model for cash discount.
+
+.. image:: ./media/multiple13.png
+  :align: center
+
+Now we are going back to bank statement and opening reconcile view.
+
+.. todo:
+
+	For bank statement reconciliation with model option you can follow
+	following link
+
+	`*Configure model of entries* <https://goo.gl/KRbXiu>`__
+
+
+.. rst-class:: text-muted
+
+| Written by Fabien Pinckaers (Odoo)
+| Proofread by Samuel Cabodi, Benjamin Stiens (Odoo)

accounting/payables/pay/wire.rst

@@ -1,3 +0,0 @@
-=============================
-Pay with a bank wire transfer
-=============================