Assigning a surface in Rhino to Grasshopper

Rhino Rhino for Mac
1

How do you do this?

There is no right button menu to select Set one Surface.

2

Set one Brep(?) seems to the common denominator for surfaces and polysurfaces.

3

Hi Jodie - Which version of Rhino are you running? There’s a Set one Surface RMB option for the Surface parameter in the version I’m running…
-wim