Answer: You will need a sturdy stake to support it until it is thick enough to support itself on a "trunk"; when it is as tall as you want it to be, trim the tip. Keep the lower part of the vine bare, and trim the top as needed to maintain the height you want. The top will fill in, umbrella style, over time. You may allow several stems to form the trunk or keep it to just one. Either way will work.
Q&A Library Searching Tips