Where to enter domain transfer authorization code?

When transferring my domain from GoDaddy registrar to Cloudflare, there is not a option to add the transfer authorization code GoDaddy provided on the Domain Transfer page in Cloudflare. Is there another step involved to add my domain to my account before trying to transfer the domain from GoDaddy to Cloudflare?

That would be the standard “Getting Started” where you add your site to Cloudflare and set the name servers. Once your site is added to your account, it will be available for a registrar transfer as well.