After using the Lightroom plugin to customize and export your theme, you will need to add the theme to your WordPress installation.
The theme should be installed manually using an FTP client, per WordPress documentation.
After uploading, visit your WordPress Dashboard, the Appearance > Themes menu. You may preview or activate the Chado theme or any child theme here.
After activating the them, a new area will become available in your dashboard, filed under Appearance > Theme Options. These options will allow you to further customize your theme's appearance and behavior, and are detailed elsewhere in this documentation.