New Browse Control in Request Screen

Hi there,

I'd like to add a new browse control to the request details screen that has editable fields and that allows the user to add/remove rows (like some Admin screens do). The editable fields would include QD fields, date fields and dropdowns. I've been looking at the standard browse controls in the request screen and the Admin screens, but for starters can't see where one defines the type of fields for each column. Can someone please point me in the right direction?

Thanks,

Simeon