Help with miis

[DE℣IL ƧỼN]

So I've been playing Mario Kart Wii for a while with Dolphin. Now, my main goal was to have different time trial "rules" for each profile. One would use heavy bikes (the superior, overpowered kind of vehicle), the second would use heavy karts (not as overpowered as bikes, but the best amongst karts), the third would be medium/small bikes, and the fourth would be medium/small karts. As of right now, all 4 profiles are named "Player". I'd like to be able to just rename the profiles. I tried finding a way to run the mii maker, but I'm having trouble just running it in the first place. So I'm wondering if there's a way to change the profiles names or how to run the mii maker and import those miis to Mario Kart Wii...