Here are rules for what you can access/target for interactions:
1. You can always target any page/state of your main application
2. You can target the current component (the one you are editing in Edit-In-Place)
3. You can target any component instances in the current component. If your current component contains 2 custom components, then you can target either.
Keep in mind, transitions in Catalyst can only exist between different states of the same component.
Answered by: Bear Travis
See full discussion thread, including examples.
