Where To Enter Tickerfactory Url?

I was hoping someone responded with the how to---Im having problems doing it to!

I haven't messed with it in a while but I think you click the little arrow up at the top right of the screen (right after your username) and click on Settings. Once there you should see the various options listed on the left side of the screen. Paste the url into the Signature box and see if that does the trick.