[NEWBIE] Setting up N64 with Lakka

Alright so after scouring google for what feels like forever posting on Reddit is usually never one of my option but i need an answer here

I have Lakka set up on an old laptop i own. i just recently bought two N64 USB controllers for it and they had just come in today however after alot of fiddling with settings and such im not sure what to do here

i can get almost all the buttons to work the way the should , A.B.START.D-PAD.L.R.JOYSTICK however because of lack of options in the GUI im not sure what to map for the Z and C buttons

im a complete newbie when it comes to this as i just followed some youtube video on how to set this up so any help at all would be greatly appreciated!

EDIT: So i noticed i had the setting analog to digital to right stick and as soon as it was disabled the C buttons all worked as they should however when holding Z and pushing A it uses the right C button? i also cant press B while holding Z down because is uses C down. is there a way to overwrite this?