Cannot edit indicator using your directions

Your instructions...

Creating a custom indicator

In order to do this quickly, let’s take a prototype that requires minimal work. Go back up to the top of your chart, right-click to open the properties for the “Exponential Moving Average,” and choose “Edit Properties.” This will open AlgoStudio – the full-cycle development environment that is included in the Protrader Desktop platform

https://protrader.org/articles/analytics/custom-ind...

From my chart, I can manage to get a drop down menu that includes Edit indicator, but it is grayed out!!