I tried to view metallic copper structure with conventional and primative cell using material studio visualizer.  primative and conventional cell options are ACTIVE under   Build  > symmetry >  conventional (primative) cell.

However, I tried this for ruthenium structure. I need Rhombohedral Representation. however, this is NOT ACTIVE.

How do we change from conventional to Rhombohedral (Hexagonal) Representation for the non-cubic structures like, Ru?

Thank you for your help. If I am not clear with my question. I will explain it again.

Yasin