How do I operate the FocusONE? Ashley July 26, 2018 20:29 Follow Please check out our User's Manual video below to learn how to operate your focusONE! Related articles My Focus Module skips teeth and does not stop at macro or infinity. What can I do? How do I fine-tune the Focus Module? Do I need batteries for the Focus Module? If I purchased my Head Module secondhand or from a reseller, am I eligible to receive a free HeadPLUS? I applied for the HeadPLUS Upgrade Program, did you receive my application? Comments 0 comments Please sign in to leave a comment.