[ADD] accounting: How to forecast future bills to pay?

https://docs.google.com/document/d/1sA9L5WJKsJbf60SPXI646rreKJi0CbKwCDVaGRrBsb8/edit#

accounting/payables.rst

@@ -7,5 +7,4 @@ Account Payables
 
    payables/supplier_bills
    payables/pay
-   payables/forecast
-   payables/employee_expenses
+   payables/misc

accounting/payables/employee_expenses.rst

@@ -1,9 +0,0 @@
-================================
-How to record employee expenses?
-================================
-
-.. toctree::
-   :titlesonly:
-
-   employee_expenses/employee_paid
-   employee_expenses/company_paid

accounting/payables/employee_expenses/company_paid.rst

@@ -1,3 +0,0 @@
-=================================
-Expenses paid with a company card
-=================================

accounting/payables/forecast.rst

@@ -1,3 +0,0 @@
-====================================
-How to forecast future bills to pay?
-====================================

accounting/payables/misc.rst

@@ -0,0 +1,9 @@
+====
+Misc
+====
+
+.. toctree::
+   :titlesonly:
+
+   misc/forecast
+   misc/employee_expense

accounting/payables/misc/forecast.rst

@@ -0,0 +1,77 @@
+====================================
+How to forecast future bills to pay?
+====================================
+
+When you get hundreds of vendor bills per month with each of them having
+different payment terms, it could be complex to follow what you have to
+pay and when. Paying your vendors too early can decrease your cash
+availabilities and paying too late can lead to extra charges.
+
+Fortunately, Odoo provides you the right tools to manage payment orders
+to vendors efficiently.
+
+Configuration: payment terms
+============================
+
+In order to track the vendor conditions, we use payment terms in Odoo.
+Payment terms allow to keep track of the conditions to compute the due
+date on an invoice. As an example, a payment term can be:
+
+-  50% within 30 days
+
+-  50% within 45 days
+
+To create your most common payment terms, use the menu: :menuselection:`Configuration -->
+Management --> Payment Terms` in the **Accounting** application. The following
+example show a payment term of 30% directly and the balance after 30
+days.
+
+.. image:: ./media/forecast01.png
+  :align: center
+
+Once payment terms are defined, you can assign them to your vendor by
+default. Set the Vendor Payment Term field on the Accounting tab of a
+vendor form. That way, every time you will purchase to this vendor, Odoo
+will propose you automatically the right payment term.
+
+.. image:: ./media/forecast02.png
+  :align: center
+
+.. note::
+
+    If you do not set a specific payment term on a vendor, you will still be
+    able to set a specific payment term on the vendor bill.
+
+Forecast bills to pay with the Aged Payables report
+===================================================
+
+In order to track amounts to be paid to the vendors, use the Aged
+Payable report. You can get it from the Reports menu of the Accounting
+application. This report gives you a summary per vendor of the amounts
+to pay, compared to their due date (the due date being computed on each
+bill using the payment term).
+
+.. image:: ./media/forecast03.png
+  :align: center
+
+This reports tells you how much you will have to pay within the next
+months.
+
+Select bills to pay
+===================
+
+Using the menu :menuselection:`Purchases --> Vendor Bills`, you can get a list of vendor
+bills. Using the advanced filters, you can list all the bills that you
+should pay or the bills that are overdue (you are late on the payment).
+
+.. image:: ./media/forecast04.png
+  :align: center
+
+From this screen, you can also switch to the pivot table or the graph
+view to get statistics on the amount due over the next month, using the
+group by "Due Date" feature.
+
+.. rst-class:: text-muted
+
+| Written by Fabien Pinckaers (Odoo)
+| Proofread by Geoffrey Bressan (Odoo)