Trying to put a lookup filter on a field that points to an opportunity, but the filter section does not appear when I set the related object to opportunity. I checked around and found quite a few threads saying that opportunities were not supported in lookup filters, but the link to the SF documentation below clearly states lookup filters ARE supported for opportunities. So how do I get it to appear?
EDIT: I think it may have something to do with the fact that Opportunity ID is an autonumber field (whereas for accounts it is account name), and the documentation above states that lookup filters cannot reference those. Can anyone confirm this is why? It seems a bit stupid to say it is possible to put filters on fields that point to opportunities but then completely contradict that later on in the same article.