Stock Proprietary Trading

Are there any stock prop trading firms that allow one to use (remotely) the Tradestation platform? I would appreciate any insight here.

 

That will be your mum?

 

I would think Props would allow you to use TradeStation for analysis but not to trade on.
How would they guard against their risk?

Unless that is the platform they use themselves. Who that is, if any, I don't know.