Add product ideas to Notion via a Slack command

Use Case In most companies, employees have a lot of great ideas. That was the same for us at n8n. We wanted to make it as easy as possible to allow everyone to add their ideas to some formatted database - it should be somewhere where everyone is all the time and could add a new idea without much extra effort. Since we're using Slack, this seemed to be the perfect place to easily add ideas and collect them in Notion. What this workflow does This workflow waits for a webhook call within Slack, that gets fired when users use the /idea command on a bot that you will create as part of this template. It then checks the command, adds the idea to Notion, and notifies the user about the newly added i

Help me set up the n8n workflow "Add product ideas to Notion via a Slack command" (https://n8n.io/workflows/2140). It uses: HTTP Request, Notion. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.