Hi Isambard,
In category settings you can select that all topics go through approval
In the image above below ‘Moderation’ you can set a group name. In your case I think category moderators would work nicely. You can see what ‘powers’ category moderatos have in this topic here.
There is a manual way to put items in the review queue but this way seems ineffective as it makes you choose a flag option and just wanting to review a topic doesn’t fit the bill of any of the flagging options in my opinion.
As a side note… maybe the ‘Queue For review’ Button should always be clickable or else you might as well just flag the post normally its the same amount of clicks.
