Suppose the current price of BTC/USD is $6,100. You place a limit order to buy 0.8 BTC/USD at $6,000, but you want to place a Take Profit order to close this long position once it opens. You could sign back into your account and place a new Take Profit order to sell 0.8 BTC/USD at a price of (for example) $6,300 after the limit order has executed or you could instead program a Conditional Close order into the original limit order before it is submitted. You could attach a Conditional Close order of type “Take Profit” with Profit Price of “$6,300” to your limit order
Situation 1:
The price does not go down to $6,000 to fill your limit order and instead increases directly to $6,400. Since the primary (order to buy 0.8 BTC/USD at limit $6,000) did not execute, the Conditional Close order was never placed and no orders have executed. The Conditional Close Take Profit order will only be placed if the primary limit order executes.
Situation 2:
The price falls to $6,000 or below. As soon as the limit order to buy 0.8 BTC/USD at $6,000 executes, the Conditional Close order to sell 0.8 BTC/USD with a Take Profit order at a profit price of $6,300 would be placed. Now that the order has been placed, this Take Profit order will act like a regular Take Profit order -- it will execute as a market order once the last traded price reaches $6,300