Toolbox Properties
Each toolbox has a property, Dimension, which specifies whether the toolbox should display in the Tool Boxes dialog when you are working in 2D DGN models, 3D DGN models, or both (the default).
Each toolbox has a property, Dimension, which specifies whether the toolbox should display in the Tool Boxes dialog when you are working in 2D DGN models, 3D DGN models, or both (the default).