Studio: joint editing on G8 - how to lengthen index finger?

i want to just lengthen the index finger. That's 3 bones. Unfortunately, there are only parameter dials for rotation.
how can I enable the bone's y-scale dial?
I don't want to use a custom morph for something simple like this. Do I have to?
Comments
Try opening the parameter pane's option menu (the lined button in the top corner, or right-click the tab) and enabling Show Hidden Properties. The results may not be satisfactory, however.
I have hidden properties turned on, but still only see scale option, not y-scale.
you hve the finger bones selected, you aren't looking at the Pose Controls section on the figure (or hand) node?
Thanks for your response Richard. I’m indeed looking at finger node, not the bone itself. Do i need to go into bone editor and scale it there? But then what? Do i then have to adjust rigging or such? Thanks.