To set a pitchfork at the price chart it is necessary to choose Objects - "Pitchforks" - "Modified Schiff Pitchfork", as shown at the pic below.
At chart it looks as following:
In properties it is possible to change color and thickness of lines,
And also to set filling of the channel, as shown at the pic below.
We wish you high profit.
This graphic element can be discussed at forum