What I have seen is the whip is supplied as part of the modular furniture. It is a piece of flex with conductors in it,and you terminate it to a junction box. It is helpful to have some shop drawings so you know how many circuits the furniture is wired with. And dont forget the voice/data, this you will have to run to the workstation through wireway that is usually part of the furniture. That should also be on the shop drawings.
