FT
CTC aviation is a Training School where wannabies are sent to get a licence on for example a A320 or B737 rating prior to being sent back to the Airline that is sponsoring them if they are lucky. I imagine the Crewing Assistant (apart from making the tea) will be reponsible for ensuring these candidates are in the right place at the right time, as well as ensuring the CTC Trainers are up to date as well. In some cases also in the past CTC Trainers go and fly with Airlines so you could be coordinating this as well.
You would need an understanding of CAP371 possibly (the CAA Rules on limits on flying, rest etc), communication skills and common sense.