How can I see my records on the label design
You can view records and navigate through them in label design by turning on the live database connection.
Click on the Cylinder icon on the bottom left of the design window above the Template tab. This should enable the view of records and you will be able to navigate through each record using the arrows or by typing in the record number of the record you want to view.
More Information (Optional)
If there is a filter/query it will show the results of the last filter applied. If nothing has been typed then the Query prompt will come up when you click on the cylinder icon.