Building the Progression
To use a Martingale-style progression, use the Profit Factor setting in the Strategy Builder and set the value to 2.0. This will double your stake as needed to recover losses.
Adding Safety Buffers
Martingale is risky, so always key in a Max Bet Limit. Use the Monte Carlo Sim to test your bankroll range first; this will show you exactly how many losing rounds you can survive before hitting your limit.