To implement Hierarchical-QoS (Multi-tiered scheduling), the following steps must be undertaken: First, a scheduler-policy must be configured as it defines how scheduling will be handled across different tiers. Second, the network queue policy must be configured to make use of the scheduler-policy, ensuring that queues are properly managed according to the policy. Finally, the scheduler-policy must be referenced in the SAP-ingress and SAP-egress policies to ensure they can make use of the hierarchical schedulers. These actions properly integrate Hierarchical-QoS configurations within the system.