I would recommend you reveiw our online documentation regarding Reveiw Notes. The online docs can be accessed here at the below link.
But it doesnt look like Review Notes are available for Reports. You could use "General > Notes" or "Comment" instead, both show when you go to the Properties of a Report.
yes I know we can use the Notes functionality. But the user has to click quite a bit in order to get to the notes, and create a note. The point with using Review Notes in Collaboration is - it is easy !
If you think this is an idea worth considering adding to Hopex then i would recommend that you submit it via the Customer Ideas page: