whoops, logged into wrong account
Stephen, if Sales doesn't want to submit a form for each lead, then create a google spreadsheet and they can add as many folks as they want in one shot.
Make sure to have a opt in column too.
As others noted, the form fill out is once per lead. A kiosk form would have to have pre-fill disabled on the Form and all fields to work properly. It's fine to do that, but not in the way your salespeople suggest.