Scratch

It depends on the transition between "parts" I guess.

Such as if parts change by a variable and broadcast, you can do this:

In the second part this sprite would appear, but every other part it would disappear.

Or if a certain sprite causes it to show and hide, you can put this in your hiding sprite:

And in the trigger sprite make it broadcast those messages when you want it to show and hide.

It all depends on what is triggering the showing and hiding, understand?