I have demand but analyze: should I create waiting list? Map the waiting list psychology: scarcity, demand signal, urgency. Calculate: if I limited spots and created waitlist, would perceived value increase? Show me the waitlist mechanics: how many spots, how to manage list. Give me the scarcity playbook: create real scarcity through limited availability. Include: when waiting lists help vs. hurt, how to manage waitlist without losing people, and whether I should limit my availability strategically.