Customize menu > Grid and Snap Settings > Grid and Snap Settings dialog > User Grids tab
The User Grids panel controls Grid object automation and AutoGrid settings.
Interface
Grid object automation group
Determines if the software automatically makes grids active upon creation.
Activate grids when creating: Turn on to automatically activate the grid you created.
Tip: If not turned on, you can activate the grid by selecting the grid, then right-clicking and choosing Activate Grid > Selected.
AutoGrid group
AutoGrid allows you to automatically create grids on the surface of objects. The task of creating objects that are aligned to other object surfaces has been simplified. Turn on AutoGrid in the Object Type rollout of a command panel. When you select AutoGrid, the software uses the setting in the User Grids dialog for world or object space.
World space: Aligns grids to world space.
Object space: Aligns grids to object space.