You asked for room and fewer rules. Flex is both.

In one line: on any one symbol, every position cannot exceed 3% of your starting balance. Set a stop on everything and keep each symbol's total under 3%.

How we measure it. Risk on a position = distance from entry to stop-loss × the value of that distance for your size. It's summed per symbol - every open position on the same instrument counts together, and each instrument is measured on its own meter. On a $100K account that's $3,000 per symbol. Every position must carry a stop-loss; one opened without a stop is measured at the full 3% for that symbol until a stop is set. Trailing a stop to break-even or better reduces that position's risk to zero and frees room on that symbol. Hedged positions on the same instrument are measured net.

Positions on different symbols have separate meters. EUR/USD at 2.8% and GBP/JPY at 2.6% both pass - the cap is per instrument, not per account. Your 3% daily loss limit and 8% static drawdown still apply across everything, and in practice those are what bind first if you're running several symbols hot at once.

What happens. On the challenge, an order that would breach is rejected where the platform allows it, or flagged where it doesn't. On the funded account: first breach closes the account.

In one line: don't size up to chase a loss. Adds into a winning position, and normal-sized next trades after a loss, are fine.

Three specific patterns. (1) Averaging down with size: adding to a losing position with a new entry larger than the previous one, same instrument and direction. (2) Loss-recovery sizing: after a losing trade closes, opening the next trade on the same instrument and direction with increased risk and volume, within the same or next trading day. (3) Grids: a ladder of orders in the same direction that increases in size as price moves against you. Equal or smaller adds into a position at break-even or in profit are allowed. Losing three trades in a row at the same size is not martingale; it's just trading.

What happens. A flag lists the specific trades so you can see what tripped it. Same escalation as the risk cap. If you think we've got it wrong, reply to the alert email - a human reviews every martingale flag before any payout is affected. The risk cap still applies on top: even a permitted add has to fit inside 3%.