The risk management section lets you define rules per connected API key — for example maximum leverage, maximum loss per trade, or maximum loss per day in percent or in USD. Trades that break a rule are marked with a warning icon in your journal.
These rules exist inside TMM for review. They do not touch your exchange account, do not close positions, and risk control remains your responsibility.
If you connect the TMM Telegram bot, it can also send an alert when a rule is broken.
Start from numbers you have decided in advance: how much you risk per trade, the largest loss you accept in one day, and the leverage you allow yourself. Enter those numbers as TMM rules so violations are flagged automatically instead of being remembered.
The free guides cover the reasoning behind the numbers: risk management, position sizing and stop-loss orders. Trading psychology covers the part that makes traders break their own rules.