Auto position/contract size

So if we are unable to get trader locker it will be much appreciated if top step can have that feature from trader locker where you just type in the risk amount.for example if I want to risk $250.00 or 0.5% risk on a 50k account. after we type the risk we want to use we just drag the stop loss and it automatic figures out the contract size for us.This can be very helpful for traders coming from trader locker or even coming from trading view it self.