Setting Class and Design Layer Visibility for the Drawing Area Use the Organization dialog box to set the visibilities of classes and design layers in the drawing area. To set the visibility in the drawing area: 1. From the Organization dialog box, select the Classes or Design Layers tab in Details view. 2. Change the Visibility settings as desired. (See Setting Visibilities.) 3. To see the changes before saving them, click Preview. 4. Click OK to save the changes.