Additional Column in CJ20N at activity level

Hi Experts

The requirment is to add a new column for material price in the right hand side screen in CJ20N, when we select any activity in CJ20N and try to attach material component .

The new column (material price) should be next to the requirment quantity column, it will pick the price from material master and will display it.

This is a development thing ,but i want to know whether is it possible and what FM or user exit can be used.

Thanks

DHRUV