Visual Merchandising requires a default preview user and, in a multisite environment, a default preview site. Specify default preview users and sites with the properties of the atg/dynamo/service/preview/PreviewManager component.

The defaultPreviewUserId and defaultPreviewSiteId properties specify the preview user and site that are used when a merchandiser clicks the Layout button in Merchandising when no asset is currently loaded in the Details pane.

If defaultPreviewUserId is not set, the default preview user is an anonymous user. If defaultPreviewSiteId is not set, the default preview site is the first site in the ordered list of sites.