The Z0 tool allows you to set the zero point of the printing plane. You will need to do this if the print bed is replaced or disassembled, in case a substrate is added (glass top, heated floor, other…), or when we simply do not have adherence to the first layer or it is too attached to the print bed.
The procedure is simple and takes only a few minutes of attention. Let's start with reaching the card “INSTRUMENTS” and select the tool “Zero Z”.

In the window that opens, press the Z home button at the top left, by doing so, the Z axis will be positioned at the highest point.

The arrows will also appear in the window that will allow us to control the arm on the Z axis.

Now we can place a sheet of paper on the surface in correspondence with the extruder projection.

With the arrows appearing in the window, lower the printing arm until it touches the sheet positioned on the platen. Once the nozzle touches the sheet of paper enough to exert pressure on it but not enough to block it, press the button “OK”.