Included with the 2.4 release of Magento Commerce is an enhanced purchase order (PO) approval process. This allows for the implementation of PO workflow processes that can be designed around speeding up B2B purchases.
The 'Purchase Approval' workflow is included in Magento 2.4.0. It provided new workflow functionality specifically designed with B2B business goals in mind. This will allow B2B buying companies to configure approval processes that cater to their day to day business needs.
PO workflows can be readily set up by editing a simple form in the user's registered store account.
To access the approval rules for your company, click Approval Rules in the left panel for your customer account.