Interesting in some reading too I found similar info that led me to settings, but I think the only way you see "Symbol Libraries" if you are using netlist flow,
if you are using Integrated flow that won't be there? Which is how we are running. However I did see those commands Rescan & Configuration.
Did not try that till I did a little more reading. But I did get a little further if you rt click in search pain of DxDatabook, you do see menu to get to edit configuration where all the parameters are controlled.