cs-cart few minor modifications in vendor panel

I need an expert who can modify certain part of our cs-cart multivendor website we need - vendor payout - we need to add more two fields to be added (via text box) and calculated at end. category addition pattern modification - we need categories to be selected via drop down product options and discount price fields - we want it to be highlighted simply for selection vendor panel - we want to hide other unnecessary fields from vendor panel (we do not want to show certain tabs and other things to vendors to confuse them) shipping - need to add tracking number at vendors end