Scenarios help to manage the visibility of geometries in your projects, based on your design schemes.
When you open the project each time, it can be helpful to start with a single scenario visible to prevent confusing stacking or invisibility states.
The default scenario is denoted with a Star in the Scenario Palette.
To set a default scenario, nominate one of the Scenario palette.
Open the scenario manager
Mouse over the scenario your want to set as the default
Click the Star to make it the default.
Regardless of visibility on individual scenarios at project close, the next time the project is opened, the default scenario will be visible and focused..