A theme comes with multiple demo presets. Each demo is pre-configured with its own layout, colors, sections, blocks, and design style. You can use the exact section, layout of a specific preset.
When you haven't purchased the theme yet, you are using the trial version.
How to add a demo preset:
Search for the theme on the Shopify Theme Store.
Click Try theme to add the trial version to your store.
If you want to try another demo preset:
Remove the current trial theme from your store.
Go back to the Theme Store and select a different demo preset.
Click Try theme again to add that preset.
If you have purchased the theme but want to test another demo preset:
How to add a new demo preset:
Return to the theme's page on the Shopify Theme Store.
The Try theme button will now appear as Add new copy button.
Click Add new copy to add a new theme version using the selected demo preset.
The newly added demo preset will appear in the Draft theme.