Grids are one of the most important part of the building design project. To modify the grid settings such as grid colour, grid line style, grid bubble cell in project level basis, we need to modify in '.dgnlib' file. And we need to connect that information using '.pcf' file of that same project.
Please go through the following steps to solve this issue,
Now in that project, create your drawing. Place the drawing call-outs with proper ‘Drawing Seeds’. Then in sheet view and in drawing model the required modified grid styles will be visible.