Aloha Li Wang Ho,
That was kind of shakurav to do the searching in previous posts to help with your and his questions. I still stand by my earlier reply he references in his post.
Like Chunyi mentioned during a group phone healing a couple days ago: Place the tounge at the roof of the mouth gently wherever it will touch comfortably.
At the point in your work there is no need to spend time thinking about it, rather bring your focus to "feeling" the energy during your exercises/meditations.
Much Love, Shawn