Although you can access vendors from the business accounts screen, it provides very little value to sourcing and procurement professionals. By adding the below tabs, Acumatica can quickly provide a powerful solution for procurement community;
It may be even better to take an additional step and separate vendors and customers from the Business Accounts screen and create two new areas;
These two screens would be where sales, marketing, & procurement folks would go to as their primary screen to view/edit/manage customer and vendor accounts. Leaving the existing Customer and Vendor screens to the A/R and A/P departments mainly for account setup and financial controls/management.