Apex Drawdown Zero has no account-level daily-loss or drawdown halt. It protects the account per trade, so the setting that keeps you inside a prop firm's limits is your risk per trade.
The settings that matter
RiskPercent(default 1.0) — the share of your balance at risk on each trade. The stop-loss is attached at entry and the lot size is calculated from it.MaxLots(default 0 = off) — an optional hard cap on the lot size of any single trade.OneTradePerDay/StopAfterWin(both on) — at most one trade a day, and none after a win.UseBreakEven(on, at 0.60) — moves the stop to entry once the trade has run 60% of the way to target.MaxSpreadPoints(350) — skips entries when the spread is wider than this.
Sizing against your firm's limits
Work out how many losing trades in a row your firm's daily and overall limits allow. At 1% per trade, five losses in a row costs roughly 5% — the full daily limit at most firms. If your firm allows 5% daily / 10% overall, 0.5% per trade leaves a comfortable buffer.
Gaps and slippage
A stop-loss cannot guarantee its price during gaps, fast markets or outages. Leave room for that — never size so that the last losing trade in a streak lands exactly on the firm's limit.