On Hyperprop, stops and targets are checked against the live market price, not your entry price. That enables two useful things.
Moving a stop into profit
Once a trade is going your way, you can move your stop to lock in some of the gain.
On a winning long (you bought and price has risen), you can pull your stop up above your entry. If price comes back down to it, you exit in profit instead of at a loss.
On a winning short (you sold and price has fallen), the same in reverse: pull your stop down below your entry.
You can do this by dragging the line on the chart or by adjusting it on an open position. The only thing still blocked is placing a stop on the wrong side of the current price, because that would trigger the instant you set it.
Which side a stop takes
A stop order picks its direction from where you place it relative to the current market price:
Above the market: a buy stop. Often used to enter on a breakout upward.
Below the market: a sell stop. Often used to enter on a breakdown downward.
Limit orders are not affected by this, only stops.