Topic on Talk:OAuth/Owner-only consumers

The page says

"The option "owner-only" has to be checked."

It's stated right after 2 or 3 scenarios. Under which scenario?

Well, this page is about owner-only consumers so all scenarios discussed on the page apply.

i've edited the page to be clearer.

Since "The option "owner-only" has to be checked" was previously inside parens with the comments about wiki-farms and Wikimedia, that indicated that "The option "owner-only" has to be checked" applies only to wiki-farms and Wikimedia.

But, according to you, it doesn't apply only to wiki-farms and Wikimedia, it applies to any wiki. So, it was misleading as written.

Tho i'm still unclear about exactly which part of the process is done at central wiki of the farm or meta:Special:OAuthConsumerRegistration/propose.

Special:OAuthConsumerRegistration/propose only exists on the central wiki of the farm (in the case of the Wikimedia wikifarm, that's Meta). I've tried to make that clearer, let me know if it helps.

The way it's currently written, it sounds like Special:OAuthConsumerRegistration/propose must be used in all cases, even on stand-alone wikis. Is that the intended meaning?

Yes. A standalone wiki is basically a wikifarm with one wiki :)