O1 visa appointments- CGI website

Anyone has an experience with O1 visa stamping? On CGI website, I don’t see option for O1 visa, they only have L,H,O and others. Do you know which option to select for visa dates?

One the first page, you would see common visas such as F, H and L. You may not see O1. The only other option available is Business/Tourism. Once you choose this, you will see a big list of various visas. You select petition-based visas. Once you click it, you will now see O1 visas and you can select it.