Due to the fact that TvOSCustomizableTableViewCell is a subclass of UITableViewCell, the first step is to drag and drop a regular UITableView from the Object library to your view.
Then change the value of "Custom Class" to "TvOSCustomizableTableViewCell", and the cell type to "Custom" to avoid the default focus behavior.
And that's all...
The custom properties can be configured directly on the Storyboard using IBInspectables.