Odoo is a modular set of applications for which you only install the applications you need. Therefore, we must install the Purchase application in order to continue. By this point, you should be familiar with the process of installing a new application in Odoo. The following is a screenshot of the Purchase application as it appears in the Apps list:
When you install the Purchase application, you will get a new purchasing menu in your toolbar.
It is possible that these menus may already exist, or that purchasing may already be installed if you have installed another module, such as eCommerce, that requires Purchase Management as a dependency.
The Purchase menu is where you can create quotations and purchase orders for the products you purchase from your vendors.