Is it possible to create a Custom Infolet in the Purchase Order Overview?

Summary:

Is it possible to create a Custom Infolet in the Purchase Order Overview?

And How to do it?

Procurement > Purchase Orders > Overview

There are infolets in Purchase Order Overview ( faces) page.

In Purchase Orders ( Redwood) I cannot see the same infolets.

There is reguirement from customer's business that they should have customized infolet

in Purchase Order Overview page.

The custom infolet should have counts of open schedules for BU not only for the userid as buyer.

And the link to list the PO's.

Are we able to create new custom infolets into Purchase Order Overview page?

Or modify the existing 'Open Schedules'