Membership tiers are usually structured so that each member is assigned to one active tier at a time, with that tier determining the specific benefits, privileges, and access they receive. If a member upgrades to a higher tier, the new tier's benefits typically replace those of the previous tier rather than being combined. This approach helps maintain fairness and clarity across the membership program. However, special promotions, limited-time offers, or unique membership policies may occasionally provide additional benefits beyond a member's current tier.