Part Appraisal column in appraisal document

Hi,

In a template we have one appraise , one appraiser and one role as part appraiser...

In R/3 that part appraiser column is coming in the editable mode.. but in standard BSP itself that part appraisal column is coming in the display mode always//

is there any solution for this..?

i need that column in editable mode..