Multi-Step Approval Workflow

1. Create a Google Sheet with columns: Request ID, Requester Email, Description, Approver 1, Approver 1 Status, Approver 2, Approver 2 Status, Final Status, Timestamp. 2. Create a new workflow with a Google Sheets trigger — set it to watch for new rows added to the sheet. 3. Add a Slack node — use the "Send Message" action with interactive buttons. Send a message to Approver 1 with the request details and "Approve" / "Reject" buttons. 4. Add a Slack Webhook trigger node to capture button click responses. Parse the callback payload to determine which button was clicked and by whom. 5. Add an IF/Router node — branch on the response. If approved, add a second Slack node to notify Approver 2 with the same button pattern. If rejected, route to a Gmail rejection notification. 6. Repeat the webhook and IF pattern for Approver 2. On final approval, add a Google Sheets node to update the row with "Approved" in the Final Status column. 7. Add a Gmail node at the end of the approval path — send a confirmation email to the original requester with all approver decisions and timestamps. 8. Test the full flow: add a row, click Approve in Slack for both approvers, and verify the sheet and email are updated correctly. Then test the rejection path.