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? HeadPLUS Why does my Focus Module lose focus when tracking an object? How do I set up the HeadPLUS? How do I set up a target without the Focus Module? Comments 0 comments Please sign in to leave a comment.