Extract the dolphin zip wherever you would like, then open the dolphin.exe file. After that, check your documents folder for a folder named "Dolphin Emulator" and open it. Navigate to "Load\Textures\" and extract the GLM.zip file into that directory. In dolphin, you can go to "config" at the top to set the paths to scan for any game files. Set the path to wherever you store the game's ISO file. That should be all that's required. The title screen for the game should say "4K" in the logo if everything is successful.