Generally, a sole member LLC is managed by its Member.
In most cases, LLC’s do not elect officers or directors, although an LLC could, if it so wished, through its Operating Agreement.
This arrangement is not, however, the “norm” for sole member LLCs.
If an LLC desired to elect such officers/directors, the sole member would simply sign the Operating Agreement creating the positions and use his sole vote to select the individuals to fill such positions.
If you wish to create an easy to use Operating Agreement, see Standard Legal’s LLC legal forms software; it is included in the package.