Reply to 4 CHANEL MIXER for X1 Exists?

Hi, i want to USE just 1 X1 like an external 4 channel mixer, with scenes, FX1 FX2 buttons as A C and the FX1 FX2 right buttons as B , D . I know there are some like this out there, but i want to include into that scenes, also de knobs, so i can have 4 channel Knobs for EQ. Then i will map the EFX in midi mode, so when i want to do efects and kills, i will do there.

I dont have a clue to map scenes and dont know if its posible to add the knobs to them. If anyone have anything similar ill be great. Thanks!!!.