How do I INSERT A NODE after a User Choice?

Say you already have your tree filled in, but you now want a new Character Node to appear right after a User Choice button. Here's how...

In this example, I want a new node to appear ABOVE an existing one (named here: "Center Field A")

1) Create a new Empty node at the end of a nearby branch. Then COPY the Empty Node (hold down Control + Hold down Mouse Button and drag it up).

2) Drag the Empty Node up to the User Choice button node. It will turn GREEN.

3) Release the Mouse button and it will insert and paste a new Empty Node after the User Choice.