Snapping to those points is a feature that was introduced in a later release. You'll have to use additional construction geometry/relations/etc to achieve the same result.
...I do not recall.. so, as Josh says.. you would manually add vertical/horizontal construction lines to give it quadrants.. (image attached)
(btw,.. if you need to do more circles with the manual quadrants,.. you might consider making a Block or adding to your Design Library (drag/drop)? .. then you can insert/scale when needed... otherwise, copy/paste from another open part?)
I looked at this earlier this week but forgot to reply. I greatly appreciate the help. I assumed that was my only option, but did not know if there was another way. THANK YOU!
PS> I hope it i'snt an issue that I post such newbie questions...there will probably be more to come.