To Attach the Freestyle Geometry
To make available the Attach mode, you must open a triangulated, faceted, or a volumetrically represented body.
1. Select a shape or mesh elements.
2. Click > 
Attach.
Attach.3. Middle-click in the graphics window. The selected mesh elements are attached to the triangulated or faceted body.
Tips
• When you select a face or an edge, the corresponding vertices get attached.
• The attached mesh element retains the selection intent when you apply resolution.
• You cannot move the attached vertices beyond the facet or triangulation constraints.
To drag the attached vertices beyond the constraint of the faceted or triangulated body
1. Select a vertex.
2. Press Shift and drag. The vertex moves freely.
If you select such vertices or transform them, they get attached to the faceted or triangulated body.