You cannot move the thread yourself. You can contact a moderator of the forum in which the thread resides, a community moderator, or an administrator and any one of them will move it for you. Sometimes when a thread could be posted in one of any number of forums, it will not get a good response in the chosen forum. The originator can request that it be moved to another forum in an effort to improve the response. When the move is made, the original responses move with it.