Basically, a letter is sent out as soon as the order of reference is received by a committee to study a bill or any legislation. A letter is sent out to all members of the committee identifying who the legislative counsel is, who will be drafting amendments, and who the legislative clerk is who will review amendments for admissibility. The letter actually states that if you have any concerns or questions concerning admissibility, you are to contact the legislative clerk; for drafting purposes, you are to contact the legislative counsel.
I thought I'd put that out there to clear it up.