Select the .beam exported from Rhino with BEAM .
BEAM will search for .beam files in the current .beam directory listing them in chronological order.
When used in Projects you can import elements as Loadable Families or System Families depending on the Category used or the Import As option.
Some Categories can only be imported as System Families.
It is possible to import geometry by Revit Project Origin or by Shared Coordinates.
In a Family environment BEAM will import the geometry not grouped.
This way BEAM can add geometry to existing Families and allow to bring Rhino geometry in special types of Families.
Some Categories of Families will always be imported as System Families: