You can view aggregated  layer group properties from  the Layer  Properties panel.  
To open the  Layer Properties panel for all layers:
From the tree view, right-click 
Layers 
 and click 
Properties. 
To view the properties if an individual layer, right-click the layer and click Properties.
| Name |  | 
| Number | Specifies a integer label for the layer. | 
| Material |  | 
| Type | Specifies the type of layer: 
| Conductor  |  |  
| Dielectric  |  | 
 | 
| Start Height | Specifies the  height of the bottom of the layer relative to the bottom of the board. | 
| End Height | Specifies the  height of the top of the layer relative to the bottom of the board. The end height of one layer is the same as the start height of the next layer | 
| Thickness (mm) | Specifies the  thickness of the layer. The sum of the layer thicknesses defines the board thickness. |