[ADD] inventory: least packages removal strategy

closes odoo/documentation#7416

X-original-commit: bc6c92d786
Signed-off-by: Zachary Straub (zst) <zst@odoo.com>
Signed-off-by: Felicia Kuan (feku) <feku@odoo.com>
Co-authored-by: ksc-odoo <73958186+ksc-odoo@users.noreply.github.com>
Co-authored-by: hojo-odoo <123424465+hojo-odoo@users.noreply.github.com>

content/applications/inventory_and_mrp/inventory/warehouses_storage/advanced_operations_warehouse.rst

@@ -21,3 +21,4 @@ Advanced operations
    advanced_operations_warehouse/lifo
    advanced_operations_warehouse/fefo
    advanced_operations_warehouse/closest_location
+   advanced_operations_warehouse/least_packages

content/applications/inventory_and_mrp/inventory/warehouses_storage/advanced_operations_warehouse/least_packages.rst

@@ -0,0 +1,72 @@
+======================
+Least packages removal
+======================
+
+The *Least Packages* removal strategy fulfills an order by opening the fewest number of packages,
+which is ideal for maintaining organized stock without needing to open multiple boxes.
+
+.. seealso::
+   - :doc:`Other removal strategies <removal>`
+   - `Odoo Tutorials: Least Packages <https://www.odoo.com/slides/slide/5477/share>`_
+
+To understand how the removal strategy works, consider the following example, featuring a warehouse
+that stores packages of flour in bulk packages of `100 kg`.
+
+To minimize moisture, and/or prevent pests from entering open packages, the least packages removal
+strategy is used to pick from a single, opened package.
+
+.. _inventory/warehouses_storage/pkg-qty:
+
+.. example::
+   A package of `100 kg` of flour is depleted to `54 kg` after fulfilling some orders. There are
+   other packages of `100 kg` in stock.
+
+   #. When an order for `14 kg` of flour is placed, the package of `54 kg` is selected.
+   #. When an order for *more* than `54 kg` of flour is placed, an unopened `100 kg` package is used
+      to fulfill the order. While this temporarily results in two open packages, these open packages
+      are prioritized in the next picking.
+
+Workflow
+========
+
+Using the least package removal strategy, the fewest number of packages is used to fulfill an order.
+
+.. important::
+   The :ref:`Packages feature <inventory/warehouses_storage/pack-setup>` **must** be enabled to use
+   this strategy.
+
+Consider the following example, featuring the product, `Flour`. The product's :guilabel:`Units of
+Measure` field, located on the product form, is set to `kg`. The product is stored in packages of
+`100 kg`, with one remaining package containing `54 kg`. The product category's :guilabel:`Force
+Removal Strategy` is set to :guilabel:`Least Packages`.
+
+.. seealso::
+   - :ref:`Set removal strategy on product category <inventory/warehouses_storage/removal-config>`
+
+.. tip::
+   To check the product's on-hand stock, navigate to the product form, and click the :guilabel:`On
+   Hand` smart button.
+
+   .. image:: least_packages/on-hand-flour.png
+      :align: center
+      :alt: Show on-hand stock in each package.
+
+Create a :ref:`delivery order <inventory/delivery/one-step>` for eighty kilograms of flour by going
+to the :menuselection:`Sales app` and creating a new quotation. After clicking :guilabel:`Confirm`,
+the delivery order is created.
+
+On the delivery order, the :guilabel:`Quantity` field displays the amount automatically picked,
+according to the removal strategy.
+
+For more details about *where* the units were picked, select the :guilabel:`⦙≣ (bulleted list)`
+icon, located on the far-right. Doing so opens the :guilabel:`Open: Stock move` pop-up window,
+displaying how the reserved items were picked, according to the removal strategy.
+
+In the :guilabel:`Open: Stock move` pop-up window, the :guilabel:`Pick from` field displays where
+the quantities to fulfill the :guilabel:`Demand` are picked. Since the order demanded eighty
+kilograms, which exceeds the quantity in the opened package of `54 kg`, an unopened package of `100
+kg` is selected.
+
+.. image:: least_packages/least-package.png
+   :align: center
+   :alt: Show which package was picked in the *Pick From* field.

content/applications/inventory_and_mrp/inventory/warehouses_storage/advanced_operations_warehouse/removal.rst

@@ -19,13 +19,13 @@ Odoo automatically select how products are selected for orders:
      - :doc:`LIFO <lifo>`
      - :doc:`FEFO <fefo>`
      - :doc:`Closest Location <closest_location>`
-     - Least Packages
+     - :doc:`Least Packages <least_packages>`
    * - Based on
      - :ref:`Incoming date <inventory/warehouses_storage/arrival_date>`
      - :ref:`Incoming date <inventory/warehouses_storage/arrival_date>`
      - :ref:`Removal date <inventory/warehouses_storage/removal-date>`
      - :ref:`Location sequence <inventory/warehouses_storage/sequence>`
-     - Package quantity
+     - :ref:`Package quantity <inventory/warehouses_storage/pkg-qty>`
    * - Selection order
      - First in
      - Last in