Creating a Item reference field on Change affected items tab.

Summary

I need to understand how to create a Item reference field on Change affected items tab.

Content

Hi,

I need to understand how to create a Item reference field on Change affected items tab. There are few default attributes available on affected items tab of change. I need to add a EFF filed on item to Affected items tab, so that it will be populated with the value from item on the tab when we add item to Affected items tab. how to do that.