Where is the meta box selector with Gutenberg

I have the same problem. I found this site: https://www.ads-software.com/gutenberg/handbook/designers-developers/developers/backwards-compatibility/meta-box/ which, when you scroll down passed the PHP stuff, it says:

“When Gutenberg is used, this meta box will no longer be displayed in the meta box area, as it now only exists for backwards compatibility purposes. It will continue to display correctly in the Classic editor, should some other meta box cause a fallback.”

But this doesn’t make any sense to me when you are optimizing for SEO? So I guess we have to resort back to the classic version until they come up with a better solution, but if anyone in this forum can shed some additional insight on this, please advise?

Hello,

You can find the Options dialog under Tools. See this screencast.