You may close your current position via 3 methods:
1. "Close By" Function in the Positions Tab - Close your current position by clicking on the Close By "Limit" or ”Market" icons and follow through on the request.
2. Clicking the "Close" Button (Represented by the X symbol) in the Position Line
3. Using the "Close" tab in the Order Zone, do note to choose on "Close" tab and submit an order of the opposite direction (eg. current position 1 BTCUSDT Long, to close the position, place an order for 1 BTCUSDT Short). The position will be closed once the order has gone through.