In the past few years, we have covered plenty of WooCommerce extensions that can make life easier for admins. The WooCommerce Tier Based Pricing Extension is also worth a look. It lets you create tier based pricing with custom rules for your products. The idea is to give your customers discount based on the amount they order.
You can create all your global rules in the backend and can apply them to certain user roles. Discounts can be fixed or percentage based. You can sort your tiers and show them in cart.
webkul is the developer behind this paid plugin. You can find out more about it here.