Once you are ready to explore multiple design schemes in a single project, it's time to add a scenario!
There are two ways to create Scenarios:
From the Properties palette
Select one or more geometries.
Type the desired scenario name into the Scenario selector.
Click "Create"
The new scenario appears in the selector, and the scenario palette. Any geometries that were selected during creation have been assigned to the new scenario.
From the Scenarios palette
Open the scenario palette.
Click the new scenario button.
The scenario detail screen appears.
Give the scenario a name, description, and color.
Click "create scenario"
This creates a new empty scenario.
Even if geometries were selected during creation, nothing is assigned to the scenario by default when created from the scenario palette.