A hybrid symbol is one that includes both 2D and 3D components.

1) To create a hybrid symbol, create the 3D part, then the 2D part in Top/Plan view.

2) Once drawn, align the 2D and 3D parts using the Tool > Align command, and select them all.

3) Switch to 2D Plan projection. Run the Create Symbol command from the Organize menu.

The hybrid symbol is now available in the Resource Browser.