how to apply transparency for geometry or block .
For a Rhino object to display transparently, you’ll need to set a viewport display mode to Rendered and adjust the transparency level of rendering materials.
Does this help?
Yeah,its working thanks for your response .
Is that transparency can be applied to each objects separately ?
You can assign materials to individual objects. But often it is more efficient to assign materials to layers. Then, objects can just inherit the material from the layer they reside.