IT Ops AI SlackBot Workflow - Chat with your knowledge base

Video Demo: Click here to see a video of this workflow in action. Summary Description: The "IT Department Q&A Workflow" is designed to streamline and automate the process of handling IT-related inquiries from employees through Slack. When an employee sends a direct message (DM) to the IT department's Slack channel, the workflow is triggered. The initial step involves the "Receive DMs" node, which listens for new messages. Upon receiving a message, the workflow verifies the webhook by responding to Slack's challenge request, ensuring that the communication channel is active and secure. Once the webhook is verified, the workflow checks if the message sender is a bot using the "Check if Bot" no

Help me set up the n8n workflow "IT Ops AI SlackBot Workflow - Chat with your knowledge base" (https://n8n.io/workflows/2397). It uses: Slack, AI Agent, OpenAI Chat Model, Simple Memory, Call n8n Workflow Tool. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.