How can I create Groups inside SC from selected faces that are obtained by the small faces tool

Below is a script that does that (SC small faces tool is not used but the below code does the same):

allfaces=[]
allBodies = GetRootPart().GetAllBodies()
for body in allBodies:
    faces=body.Faces
    for face in faces:
        if face.Area<=0.0002: # max face size in m2
            edges = face.Edges
            for edge in edges:
                if edge.Shape.Length<=0.007: # max edge length in m
                    allfaces.append((face))
primarySelection = FaceSelection.Create(allfaces)
secondarySelection = Selection.Empty()
resultns = NamedSelection.Create(primarySelection, secondarySelection)