Smart axes on compound glyphs

Is this possible? “Smart composites” or something? When making smallcaps, or superscript, things like that, I wish I could insert smart axes into glyphs that are made out of compounds (for example a two storey lowercase g where the ear is a separate component to move up or down contextually, i, etc) … passing the axis adjustments from the top level glyph down to its children components. Maybe it’s possible and I just got the metadata wrong. It’s not bad as is where I make the adjustments to the components themselves, it would just be nice to control from top level

That should work out of the boy. Select the component and run “Info for Selection”.