How do I add an additional lifetime cheat?

[Metro:420:]

In the buy menu it says that you can add another cheat for 20-30, but I'm not seeing where i can do that.

thanks

[H4rdH4cker]

go there: http://shop.x22cheats.com/payments.php
click on crystal and then press Order.
after that you can choose your other cheats
http://shop.x22cheats.com/attachment.php?attachmentid=6660&stc=1