Material Group description 2 in purchasing documents

Hello All,

When ever in any purchasing documents material group list is seen by pressing F4 only Main description 1 is visible. I want that Description 2 shall also be visible in F4 drill down list. This is visible in material master MM01/MM02/MM03 basic data 1 view.

What needs to be done to make Description 2 list visible in Purchasing documents?

Please help.

Thanks and regards.

Sanjay