After doing the Calendar Post Deployment Configuration below, set up the Multi-View Calendar.
Create a Lightning Component tab called Multi-View Calendar.
After that, look for the Multi-View Calendar by searching it in the App Launcher. If the App does not exist, manually create the App by going to Setup > search App Manager > Create a New Lightning App.
Make sure the Multi-View Calendar is selected as one of the navigation items.
Multi-View Calendar is now searchable in the App Launcher.