I just looked at my EQ5. I'm about the same as you as to actual use of the software so not an expert by any means. It does look possible to do circles in EQ5 but it also looks very painful. If you have your block layout open, click on help and type 'circle' in the search bar. I came up with a page that sort of walks you through the process but, as I say, it does seem quite tedious and complex. Give that a try or take the easy road of graph paper!