Due to the fact that the Fibonacci indicator is built into the trading terminal, the Fibonacci grid is built automatically. In order to identify the beginning and end of the trend movement on the price chart, you need to determine the reference points (A and B). Next, click Fibonacci lines on the terminal settings panel and stretch the grid from point A to point B. Lines are built automatically at the same time. To stretch the Fibonacci retracement grid correctly, you need to know that.
Correction levels must be built on the previous trend movement.
On an uptrend, the grid tension is drawn from a local minimum to a local maximum level 0.0 should be at the top with a downward trend from a local maximum to a local minimum level 0.0 should be at the bottom, in the direction of price movement.
The figure below shows a practical example of plot Fibonacci retracement levels.