The alarm " chirps " are there to tell you there is a fault on the system , not to tell you the car is locked .
Things like single or all door lock unlocks can be coded , mirror drops either single or both .. there are a number of actual things that can be altered but the link you have covers all of it .
A good tester is required , Durametric does most of them .. Piwis does them all but to be honest .. most of the normal functions are already enabled and theres nothing i would call special thats not .