How can you make custom notes like hd, halo or even 6 and 9 key?

HOW TO MAKE CUSTOM NOTES IN YOUR FRIDAY NIGHT FUNKIN MODS!! (Like vs. tricky) - YouTube

ffgghhjjyy it is a way but adding notes to modding plus not kade engine or shit like that but replying to boyfriend there is a way just get the recent version of fnfm+ on github and then press either i or o to switch notes