You cannot use this cheat without being in one of the groups below.

how can i join in a group?

Wellcome you newbie (like me). The older said that you should comment about more than 50 times in orther post but should no too fast (then automatic system detect that you are spammer). First day with 10 comments is enough then gradually increase the number but before that you should look at the rules of this forum how commenting. When you archived 50 you became confirmed member and can be use that tool.