I think you can just put any name there. I found it a bit counterintuitive that we have to get the CRC from the ROM browser (great if you're loading a file from the Open ROM dialog instead of the browser) and fill it in manually though.
Also if I have a game running and go into the cheats menu, the game switches to fullscreen.
The addresses don't seem to be right either. I put on Infinite Magic for Zelda OoT 1.2 and it gives me 16 hearts instead.