Simply start off by clicking, the system i've designed uses the values of the amount of grannies you have and times it (x) by a certain value to get the cps, the cps represents how many clicks you get per second on auto. You can't multiply clicks made my yourself, but can multiply them using the CPS.
Started working on this yesterday as a mini project i'd do for fun. Have only spent roughly 20-30 minutes on it, and will be updating it (With upgrades coming, more powerups you can buy such as grannies, rebirths) and so on. Tomorrow: will add more powerups. this week: will potentially have upgrades and finished making 10 or so powerups. Also will implement a rebirth system asap!