KF Question:About some kf edit.And One Perk

Hello, How i can change ex:Sharp Kill for level up, in ScrnBalance i can make less, but still very much, because i not for 6lv .

And i try add SRVetDualWielder i adding good but he still not be, maybe someone has same problem and know how fix it?

And one more question. with MultipliedExpMut possible make 2x exp not for all players in server?