Snapping Grid Parameters

To access this screen:

Home ribbon >> Snapping >> Snap Mode >> Grid Snapping Parameters.
Use the quick key combination "gs".
Using the command line, enter "set-snap-grid-parameters".
On the Find Command screen, highlight set-snap-grid-parameters and click Run.

The Snapping Grid screen is used to define the snapping grid's origin and interval parameters. Define the XYZ increment values and origin. These settings are used when digitizing new or, editing existing data, e.g. points, strings and wireframes.

The Snap to Grid mode must be active for these settings to be of any use.