How do I assemble the Focus Module? Ashley July 27, 2018 20:54 Follow Please check out our User's Manual video below to learn how to assemble the Focus Module! Related articles How do I operate the FocusONE? How do I fine-tune the Focus Module? Can I operate the FocusONE without a lens gear attached? How do I teach a target with the Laser Module? HeadPLUS Comments 0 comments Please sign in to leave a comment.