regex – How can I perform capture group substitutions with RegExBudy?

I am currently evaluating RegExBuddy on my friends computer, its the latest version.
I am really impressed with it and it has everything one could want.

But I cant figure out how to do capture group substitutions with it. I mean something like this example on RegEx101.com.

I tried my best to go through the documentation, Define a Match, Replace, or Split Action is the closest relevant section and it does not describe how to do this.

Either I am not doing it right or this most basic feature is missing, here is a screenshot of what I have attempted:

Any help would be greatly appreciated!