To configure this module, you need to:

#. Install *sale_management* app.
#. Go to *Inventory -> Configuration -> Settings* and check "Multi-Step Routes" option.
#. Go to *Inventory -> Configuration -> Routes > Buy* and check "Sales Order Lines" option.
#. Go to *Inventory -> Configuration -> Routes*, filter "Archived" an "Unarchived" MTO route.
#. Go to *Sale -> Products -> Products*.
#. Create a new product with the following options:

   * [Puchase tab] `Vendors`: Set different vendors (Vendor A + Vendor B).
   * [Iventory tab] `Routes`: Buy and MTO
