You shouldn't need to adjust anything unless something is not working right. If you search the forum, there are loads of explanations of the settings. All KT LCDs have the same setting parameters, so look for LCD3 settings.
As vfr has said no changes should be needed if all was bought as a kit.
P1 is motor reduction X motor magnets = P1 value, both of these should be in the spec's of the hub motor. Motor reduction is the gearing reduction so could be 4:4:1 or 5:1 or even much more, motor magnets are winding magnets again the spec's should tell you whether this is 16 ,18 or 20 etc ,etc.
If you have two wheel pulses per revolution the set that value to 2.
Over the years we have listed all relevant info many many times so a search should pull up various threads. You will find what happens if the wrong speed pulse is in put and how to remedy and also how to confirm if the P1 value is correct you will need a GPS to verify.