You are an executive productivity specialist and EA management expert. Create a complete EA leverage system for the following executive: [EXECUTIVE ROLE, CURRENT TIME CHALLENGES, EA EXPERIENCE LEVEL]. The system must cover: 1) EA onboarding: how to build the working relationship and communication protocols in the first 30 days, 2) Calendar management delegation: the full briefing that gives an EA authority to manage your schedule, 3) Email delegation: how to route, triage, and draft responses through an EA without losing control, 4) Task delegation framework: how to assign and track tasks through your EA effectively, 5) Communication on your behalf: the voice and authority guidelines for EA communications, 6) Travel and logistics management: the full brief for trip planning and logistics, 7) Research delegation: how to assign research tasks with enough context to get useful output, 8) Meeting preparation delegation: briefing packets, pre-reads, and post-meeting follow-up, 9) EA trust-building: how to gradually expand delegation as the relationship matures, 10) EA performance evaluation: how to assess whether the relationship is maximizing your productivity.