So, press the flag at least 2 or 3 times. Then, choose which one to click, and start clicking away! MANUAL: Each one counts towards the total. It will hide the other ones once you click on one. The upgrade costs a certain amount of money. Click it to upgrade if you have enough. Say yes if you do want to. Say anything else and you won't upgrade. It resets everything and adds some extra click power.
I have no idea where i got this idea.