Left-click on the exact point where you want your camera to focus. A red square will appear in the view-finder to show the exact spot you choose. Re-click or drag the square to make adjustments.
NOTE: Adjusting the focus is only supported on the BACK camera of any iPhone. The front-facing camera (the "selfie camera") will auto-focus on it's own. When you click to focus on the front camera, OR Capture 1.0 will let you know the action is rejected.
In order to keep your footage focused on one point, the Director needs to toggle on AF Lock in the camera settings in the bottom left hand side of the screen. This will lock the focus in one spot, so the camera will not try to refocus during the shoot.
NOTE: This will only happen on the back camera of a phone, the back camera on the phone has the ability to click to focus & lock focus. The front camera (selfie camera) will always auto-focus. Click to focus and focus lock are not available features on the front camera.