For 2-disc games, you should create a subdirectory /games/MYGAME/ (where MYGAME can be anything), then name disc 1 as "game.iso" and disc 2 as "disc2.iso". For ...
If a way is found, janky or not, the files will be added. You will need a Wii ISO manipulation tool such as Wiimms ISO Tools. You might have to overcome your commandlinephobia for this one. You can ...