Multiple labels

Operating system:MacOs
Slicer version:1.0.0
Expected behavior:generate SPHARM from multiple labels
Actual behavior:

I would like to create one SPHARM-model from multiple lables (Hippocampus, 3 lables for head, body, tail). So far, I can only choose one label numer. Is there a possibility to include all 3 labels to generate the model or are you aware of a workaround?
Thanks so much, Georg