Making an empty staff re-appear on a certain sections while while using "Hide empty staves within system".

I am writing a orchestra piece and I hide empty staves without music (having rests) using the "Hide empty staves within system" property under styles. But for the organ, since it has 3 staves (for right hand, left hand and pedals), when only one of the staves has music (e.g. only right hand playing), I want the other 2 staves to appear with rests to appear, not just displaying the only staff that is playing.

This also applies to a piano that generally has 2 staves. In the screenshot I've attached below, on the left side of the screen, the staff of the pedals of the organ has rests but I want it to appear because the right hand and left hand are playing, just like it appears on the right side of the screen.