You can automate the process of copying and pasting action items from Slack to Notion using ChatGPT and Zapier, an automated workflow software that lets you build and automate anything you can imagine without coding knowledge required. To set up this system, you need to create a Zap that connects your Slack account with ChatGPT and then sends the generated tasks to your designated Notion database. The process involves setting up a trigger in Slack, sending a prompt to ChatGPT, generating a task using the prompt's contents, and finally sending the task to Notion. With this setup, you can reformat Slack messages into action items and send them to your Notion account with just a click, saving time to focus on actual work.