Admins manage subscription plans from https://amarevents.zone.id/admin/plans. They can create new plans with a name, price range, description, and a full set of feature flags (max events, max participants, max emails, max SMS, plus 23 boolean feature toggles like custom_templates, analytics, qr_scanner, etc.). Plans can be edited, toggled active/inactive, and deleted. Changes take effect immediately for new organization subscriptions.