ABCEX futures support four order types: Market, Limit, Take Profit, and Stop Loss. This article explains when to use each one.

Set TP above the current price for a long trade, below for a short trade. When the market reaches the level, the position is closed automatically. You can set it immediately when opening a position or later.
SL limits losses. Set it below the current price for a long position and above the current price for a short position. The position closes when the price reaches that level.
Place both orders at once. The position closes when either the target or stop price is reached, and the other order is canceled automatically.
Without a stop, a single adverse move with leverage can wipe out your entire margin. Using a Stop Loss is a basic risk-management practice.