dharman is correct, the Curve to Volume component in Dendro simply generates points from input curves internally. Generating your own points then using Point to Volume will give you more control.
For smoothing your final volume, just decrease your Voxel Size and (optionally) add a Smooth Volume component. You can see the sample files and documentation included with Dendro fro more information on that.
To get your offset points you can use another Dendro loop that applies a Volume Offset to your base mesh that is 1/2 the point radius you use later (then mesh closest point from that output).
If you are trying to maintain the exact look of your source curves you can continue on and generate vectors from the original and new CP points.
