Once they're added to a team, that should be one of the GM's things to do: let them know about VHLM TC (if they're first-gen obviously). As well as VHLM practice facility, VHLM fantasy zone, etc etc.
Theres no choice in the VHL. All three are always available. It used to count against teams' cash flows but those were scrapped in S12 or so because they were too flawed.