I am trying to silently install the ArcGIS 10.6 Engine via a deployment package/SCCM. So far the silently part is working correctly (using the /QN switch), but it needs to be installed as a Single Use instead of the default, which appears to be Concurrent Use.
I've done some searching, but haven't been able to find the switch to have it install and be set as Single Use, if one exists. I believe it exists with ArcGIS Desktop and I've tried a few of those switches with no luck.
I did try using the /SEAT_PREFERENCE, but that didn't seem to affect those settings.