The SizeIM Grid System is only available to Expert users, and provides the tools for laying out the structure of each Ad Size. This includes the creation and editing of content areas, which will ultimately be converted to cells.
Standard users are able to change the background properties of the grid or cells. Standard users can also hide the grid and/or cells in individual Ad Sizes. However, as a Standard user, it is not possible to edit the grid or generate cells. These actions must be performed by users with Expert-level credentials.
