TwentyCRM event based updates on selective messaging channels with logs

Who is this template for? This workflow template is designed for DevOps, Engineering, and Managed Service Provider professionals seeking alerts on various channels, with each channel being logically chosen based on the severity of the event. How it works Each time a new event occurs, the workflow runs (powered by TwentyCRM's native Webhooks feature). After filtering for the required data from the webhook, the filtered data is logged using Google Sheets. Based on the eventType from the webhook, we conditionally select a predefined messaging channel and send updates or alerts through it. Set up instructions Complete the Set up credentials step when you first open the workflow. You'll need a Go

Help me set up the n8n workflow "TwentyCRM event based updates on selective messaging channels with logs" (https://n8n.io/workflows/2509). It uses: Google Sheets, Slack, Gmail. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.