You can greatly improve readability of a Timeline by grouping its displayed Events.
For example, you may want to see Events planned for each Environment into separate lines (one per Environment) in order to know when an Environment is available.
These horizontal groups of Events are called Swimlanes. Events can be grouped by different types of Swimlanes.
Once you have added at least 1 calendar, you can customize your Timeline:
You can drag and drop swimlanes to sort them manually.
Click on the Swimlane column title to set Swimlane options:
Click on filter button to set Swimlanes filtering & sorting options: