I was able, after a bit of trepidation, to finally get the viewer in the front door.
Evidently, it is, somehow, in the same place as the original door that was there before we had the new door made. Don’t ask me how that happened, I can’t even begin to understand. When I went to drill the hole for the whatever it’s called to go in, there was a small plastic disc the same size that I had to pry out before being able to drill all the way through.
After using this drill bit, then a bigger bit, then a, well, you get the idea, the whole thing went together like a hot knife through butter.

Now I can see who’s at the door before opening it. The condo administrator came to the door last night. Did I look through it before opening the door?
Of course not. I knew she was coming, and I was in the process of getting ready for bed, cleaning off my makeup. Bummer. My big chance, and I blew it.
Next time.
Until then, stay happy, and healthy in the Lord.
