How do I disable object interaction on invisible layers?

Right now, I have the dialogue boxes for my game that pop up when an NPC is tapped. The dialogue boxes are set to a separate layer that I make visible once dialogue is initiates. Also, the GUI layer is set to invisible while the dialogue window is open. The issue I'm having is that, once the dialogue window is initiated, the invisible GUI layer, although invisible, is still able to be clicked on. How do I resolve this issue? It may just be a matter of figuring out how to disable object interactions on layer, but I can't seem to figure it out.

Several ways to do this.

System:Layer is visible(X) by itself, or do the same giving an object's LayerNumber. ie System Layer is visible(Sprite.LayerNumber)

You can also group the input events in a Group and disable the group when the layer is not visible.

This may sound like a total noob question, but how do you disable a group?

System: Set group active

WIth somthing like "state machine" you can set the group visibility depending on the state of your game.

if (state = 'GAME')

set group 'HELP SCREEN' Deactivated