Where to input code for keynote when sharing on youtube?

I want to share my Keynote presentation on youtube because the animations and transitions changes. But when I log on to my youtube account in the windows that pops up, and I keep clicking on the account I want to use(Since google's now trying to force me to migrate my google+ account with my original youtube account), but then it redirects me to youtube through safari, and tells me there's a code I need to paste into my program. But in Keynote, there is no such place