Increase number of license

T.A., Have a look @ this article (http://avgclick.me/RenewLicense).
AVG Guru

Where is the web page to increase number of license?

Thanks Alan for responding; I have been to that web page several times, unfortunately there is no way to increase quantity of license… tried several times; it will only let me buy NEW license. There was a page where the number of licenses could be increased without calling AVG, any knowledge about that?