Configure the HTML template on the HTML tab for the layer.
Use the HTML Editor to create your HTML template. A table template with all of the fields in the layer is provided by default. Blue Spatial uses bracket notation to indicate data that will be replaced at runtime with field values e.g., in the template below [Address] will be replaced with the actual address of the feature in the layer.
You can easily test your HTML templates by exporting the layer to KML in the service catalog.