My client wants to bill back internally for each meeting based on usage. Not a problem if each user was billed to one bill code. Problem is each user may be billing to many codes.
Does anyone know of a way to lock the billing code field to either not allow an end user to change it, or to force a valid code in? (i.e. similar to the meeting ID restrictions that can be put in)?
You can implement a custom bill code validator in MPWeb. There are APIs for doing this.