Step 1: 

Within the Mac Calendar application, click File on the menu bar. The choose New Calendar Subscription.

Step 2: 

Paste in your unique URL, sent via Slack. 

Then click Subscribe

Step 3:

Add a descriptive name.

Next, choose a Location. Choose an iCloud option if you use multiple Apple devices.

You can also decide how often to request updates. We like to use Every hour, but that's entirely up to you.

Finally, click OK. 

Step 4:

That's it ! 

You should see the Eventbot calendar in your side bar.