Question about rules

[Harad]

Hi i don't know where post this so i post here. I want to know how we're supposed protect our head if we can't stack 2 deployable shield. Indeed the main use of this cade is for protect against arrow. But they are not too long for protect archer head. So i want ask if we can change this rules for just can stack one shield on one other for protect head. All player can't have a wall or heavy cade for protect head. If it's not against server running....