A. was not relevant because the action to download the catalog had never succeeded. Seems I had a typo in my proxy settings - so the download never worked. Discussion for later, different category (installation).
B. Once I had my proxy settings corrected the catalogs downloaded to end-points and tasks 2 and 3 became “visible”. i.e., I forget if task 3 became relevant immediately, or if I needed to run task 2 first.
C. Once run (tasks 2 and 3) I still had to wait “until midnight” ebfore the scan results were visible in the web interface.
Again, many thanks for the hints - got me moving forward.