Template:GMS Creating a 3D Grid Workflow

Expand1. Create a 3D grid from scratch.
Right-click in the Project Explorer and select New | 3D Grid.... In the Create Finite Difference Grid dialog, enter the information for the X-, Y-, and Z-Dimension of the grid.

Expand2. Create a 3D grid using a grid frame.
Right-click in the Project Explorer and select the New | Grid Frame... command. Using the Select Grid Frame tool, right-click on the grid and select the Fit to Active Coverage command. Select the Feature Objects | Map → 3D Grid... menu command. In the Create Finite Difference Grid dialog, enter the information for the X-, Y-, and Z-Dimension of the grid.