Modify an active skill to a passive skill

[Faust]

Hello there,

I'd like to modify SL_supernovice spirit to become a passive skill. I have edited SN skill tree in order to be able to use it as a SN but I didn't find how to modify it so it becomes a passive skill instead of being an active skill.

I have looked in skill_db files, skilltree file, nothing seemed to work.

Could you help me?

Thanks for your help