Adding support to wall shelf

[buildinthevoid]

Hey y'all, so I'm trying to replicate a shelf using Chief x11. I used an arched polyline for my shelf and attached it to the curved wall, but I'm trying to figure out how to add the little joists on the underside of the shelf. I tried adding a new molding but it winds up surrounding the whole shelf. Any tips on how to add those moldings to support the underside of the shelf?

[Joe_Carrick]

1. Instead of a curved Polyline use a Molding Polyline along the wall.
2. Use a rectangular Molding Profile for the Shelf itself.
3. Use a 3D Molding Symbol (must be created with a gap area on either side for the spacing) for the brackets.