You can manage floor and grid settings using the Floor/Grid Settings dialog box. The settings enable you to customize the floor size, style, and solid floor thickness, as well as the grid that appears on the floor.
The preference settings only affect the current document. Settings such as floor size and grid spacing can vary depending on whether you are designing a work cell or an entire factory. For example, you would want a small section of floor for designing a work cell. The floor size usually matches the building for laying out an entire factory. If you change the settings in the template, all new documents use those settings. For existing documents, you have to change the settings in each document if you want the new behavior.