When I tried out the db options panel, first:
when I tried to open it, I got this alert: Dialog program error—dialog will be aborted.
I ok’ed out of that and the options panel opened.
Next: I added an auxiliary db to the db in question; but when I clicked OK, I got this alert: resume statement failed (no Pause). At that point I couldn’t get rid of the options sheet; clicking either cancel or OK got that same alert. I was able to get out of it by switching to another form in the db and closing the db entirely. When I reopened the db and then opened the db options panel, (after the first dialog program error was ok’ed out of) the auxiliary db I had tried to add did not appear on the auxiliary list.
I’m on the latest beta and still running Catalina.