Thank you Dashboard_DJ!
I will move that MR to the central location near my MX65W. I had purchased the MX65W with the idea that it could do everything - wireless AND especially security and it CAN and does both SO VERY well. Its just that I had one small area in a far corner that was not getting covered. Hence, I purchased the MR32 and put that there. This solution works FANTASTIC, but - as you'll note above, I decided I wanted authenticate access now, and that's were I was running into the problems.
Because my original mindset was to keep the MX65W as my "master" and the MR32 was just a satellite (so-to-speak), I didn't (as I noted above) previously consider that the MR32 might replace the wireless of the MX65W completely, as I can imagine that the dedicated AP circuitry and antennas in that unit are likely beefier than what's in the MX65W. Hence, I will try that this upcoming weekend or next. It is also obvious that in dashboard, there are far more options for wireless optimizations and configurations for the MR32 than the MX65W. Let me say, however, that for smaller spaces, the MX65W works exceptionally well and could easily stand-alone! Again, thanks!