Automated Voice Appointment Reminders with Google Calendar GPT ElevenLabs Gmail

This workflow automates voice reminders for upcoming appointments by generating a professional audio message and sending it to clients via email with the voice file attached. It integrates Google Calendar to track appointments, ElevenLabs to generate high-quality voice messages, and Gmail to deliver them efficiently. Who Needs Automated Voice Appointment Reminders? This automated voice appointment reminder system is ideal for businesses that rely on scheduled appointments. It helps reduce no-shows, improve client engagement, and streamline communication. Medical Offices & Clinics – Ensure patients receive timely appointment reminders. Real Estate Agencies – Keep potential buyers and renters

Help me set up the n8n workflow "Automated Voice Appointment Reminders with Google Calendar GPT ElevenLabs Gmail" (https://n8n.io/workflows/3194). It uses: HTTP Request, Google Calendar, Gmail, Code, Basic LLM Chain, OpenAI Chat Model, Structured Output Parser. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.