By the end of this guide, ChatGPT will automatically understand your role, industry, and preferred output formats without you explaining them every session. You'll get supply chain-appropriate language, the right analytical frame, and consistently formatted outputs from the first message.

• ChatGPT account at chatgpt.com (free — custom instructions available on free plan)
• 20 minutes for setup
• Cost: Free (ChatGPT Plus $20/mo adds faster models and higher usage limits)