Hi Franken,

Each guide is grounded to the closer polygon face. Is that what you mean?

Jeordanis Figuereo (Product Designer. EPHERE Inc.)

You can create guides grounded to a polygon selection by selecting the polygons and using the Add Hair button, but you canot use GroundStrand node this way, with GroundStrand you can select objects only, not components. 

Jeordanis Figuereo (Product Designer. EPHERE Inc.)