Grafting branches

Grafting a branch is moving a branch from one parent branch to another.

You can graft a branch just by dragging it on to a new parent branch. You will see a little circle on the branch - drop the branch when the red fill is in the area towards the children end of the branch to graft as a child, or in the top sector to graft as a sibling above, or in the bottom sector to graft as a sibling below.