[otrs] delete or hidde priority for customer

Hello All I read documentation. concerning this point. Add new one and rename, it seem's ok but is it possible to delete priority ? Or better, limit queue view for some customers Eg: Customer 1 -> Priority 1 -> Priority 2 -> Priority 3 Customer 2 -> Priority 1 -> Priority 2 -> Priority 3 -> Priority 4 -> Priority 5 Thanks for your help. Raphael