Attach the PDF to a chat using the file-upload option, then tell Chatbot what you need. You can ask for a summary, an explanation of a section or an answer based on the document.
For a more focused result, mention the section or topic you want it to examine. For example: “Summarise the conclusions and list the open questions.”
PDF-related features may require PRO. Check important statements against the original document, especially if your question depends on a particular figure or passage.