Place the camera module onto the platform - the module has a magnet underneath it which will stick to the platform.

Do not place the module onto the bed whilst the bed is hot - this can cause damage to the module.

Move the module to get it near to the centre of the print heads nozzle.

Next move the print head using the controls in Mainsail until the centre of the nozzle comes into focus and also lines up with the cross hairs of the camera feed.

When lined up hit start

Enter these X/Y values into the software under the T0 column as shown.