When you choose "Properties", you get a LOT of information on the selected module. The last piece of information is "Used By". And there you can see the dependent modules:
But note that there's a lot of other useful info in that Properties dialog box, such as the location on disk of the JAR file providing the module. Funny, I'd never noticed this Properties dialog box before. I suspect it may be undocumented. It would be nice if "Properties" were also to be available via a button, just like "Uninstall".