Here is the guide that will work normally and is guaranteed to work.

1. Download MAME from the resource tab and make a folder for the app to install too (unless you want it to clutter up your download area 😄)

2. Download Changes from the resources tab and put it in the "roms" folder located where you installed MAME in the first step.

3. When you boot up MAME(mame64.exe) click on the tab named "Available". You will see "Changes" in that section.

4. When you open "Changes" press any key to get into the game, then press 5 or 6 to insert credits. Once you insert one credit, you can start the game by pressing 1.

Have fun speedrunning Changes!