To use this feature, it's rather simple.
Method 1: Using comments
Simply assign this comment to your child like this: <child of: ?>It can be <child of: player> or <child of: Witch> (an event named Witch).
Any pages that don't have this comment will stop the event from being the child of the parent.
Method 2: Using plugin comment
To stop the event from being a child using a plugin command, simply write none in The Parent field; otherwise, it will remain a child of that parent indefinitely. Please view the demonstration of this feature below.