Is there a febonacci extension toll available in pi i am unable to see it

Fibonacci is available in pi , open the chart and then go to chart tool in menu bar and select the Fibonacci

So far as I know there is only retracement available, not extension. It is kind of weird that it is not there as it is widely used in Harmonics now a days.

i am asking about extension toll not retracement dou you understand extension and retracement.