Ducati Hypermotard 950 Owner's Manual page 170

1) Each time you press the button (1) the displayed
number increases by one (+1) up to "9" and then
starts back from "0";
2) Each time you press the button (2) the displayed
number decreases by one (-1) up to "0" and then
starts back from "9";
3) Press button (4) to confirm the number and
move on to the following digit.
4) Repeat the operations under steps 1) - 3) until
you confirm all the 4 digits of the Pin Code.
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