How to install CD-ROM game in DOSBox Pure?

Hello, community! I got myself the CD ROM ISO for “The Patrician” [BY DUMPING MY OWN PHYSICAL DISC]. Now how do I play it in DOSBox Pure? When I launch the ISO, I (expectedly) get to browse the contents of the CD, and I can also run the installer and install the game on C:.

However, next time I open RetroArch, I’m back to square one.

What am I missing? Where is the game installing itself to?

Have a look to this documentation: