Google Calendar to Slack Status and Philips Hue

I'm currently trialing a 4 day work week for all staff at my company, and one of the major impacts on productivity is interruptions. As such, I opted to use N8N to create a workflow to monitor my Google Calendar and when an event starts, to update my Slack status with an emote and the title of the calendar task. Additionally I opted to include to change the colour of Philips Hue lamp located in my living room where my wife is currently working so she know's if she can interrupt me or not. My calendar is built on the theory behind the Diary Detox system and as such the Slack Status reflect the colours involved. This was achieved using the emote aliases for the relevant colour circles. The Phi

Help me set up the n8n workflow "Google Calendar to Slack Status and Philips Hue" (https://n8n.io/workflows/1420). It uses: HTTP Request, Slack, Google Calendar. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.