Subdivide a Surface
This new tool 
 allows a pre existing surfaces to be subdivided into smaller sections. 
 The size of the subdivisions can be defined by entering an appropriate 
 edge length. 
- 
                                                
Right-click the surface and select
 View then select Wireframe to see the facets of a surface more clearly.. - 
                                                
On the Edit ribbon tab navigate to the Primitives group and select
 Subdivide Surface. - 
                                                
Select surface to subdivide facet(s) to.
 - 
                                                
Enter a valid maximum edge length to set a custom sized surface.
 - 
                                                
Click OK or Apply.
                                                 
The surface shape won't change but triangles will be subdivided.
                                                
                                            
Surface viewed in Wireframe before it is subdivided.
                                                
                                            
Surface viewed in Wireframe after it has been subdivided.