Color legends:
Stackable: Can be used in conjunction with other promotion types.
Special Rules: Promotion will follow the preset rules to take effect.
Optimal In Default: Two promotions can not be applied together; only the promotion with the largest deduction will be taken in default, with no option for consumers.
Alternative: Two promotions can not be applied together; the promotion with the largest deduction will be recommended automatically, and consumers can switch to another one by themselves.
Vary by Campaign: Stackability depends on specific campaign rules and may differ across events.