On  Content manager go to Custom > Author > Search The Author Of Your Choice.

Ryan - Trainz ID: barisbeer
Matty - Trainz ID: Fergotrainboy
Zec - Trainz ID: S301
Liam - Trainz ID: xxultimateragerxx
Trent - Trainz ID: Ranger_51
Tom - Trainz ID: lesley
Evan - Trainz ID: lolbiskets
Kiran - Trainz ID: kilo399
Jamie - Trainz ID: H222
Dylan - Trainz ID: ClydeGM
Marcus - Trainz ID: trainfanbugatii
Rich - Trainz ID: Scratchy