This is the Board Users board. Are you trying to move a post as a user or did you mean to post on the Board Admin board?
If you're a user, you can't move a post. Contact the board's administrator (see Board Information for the email address) and ask to have the post moved.
If you're a board admin, login as the admin, open the post and click on the Move Post icon. When the "Move to Path" field pops up, click on either Localities or Topics and then drill down until you find the board to which you'd like to move the post. Once the "Move to Path" is populated correctly, just click on the orange Move.
If you're moving the post to a surname board, you type "surnames.xyz" (without the quotes) into the "Move to Path", substituting the actual name of the board for xyz, then click on the orange Move.
Hope that helps.