Adjusting the IPD (pupil distance) must be done while wearing the headset. As soon as it is on, slowly adjust the distance by turning the upper wheel in one direction or the other. The proper setting is one that allows you to get a sharp image, it is important that you turn the wheel slowly to allow your eyes to adjust comfortably. Adjusting the headset is particularly sensitive.
Immersion settings allow you to get further away or get closer to your smartphone in your face depending on your smartphone and body type. Just as for setting the IPD, it is done wearing your Homido. It is essential to activate the two side wheels simultaneously. The proper setting is one that gives you a wide field while avoiding contact between your eyes and lenses.