There are two ways to change the size of an icon. Both methods require that this icon is selected. When graphical considerations take priority over precise numbers, use the resizing tool. To do this, click on the resizing tool. Without removing your finger from the mouse button, drag the resizing tool towards or away from the icon to change the size of the icon. The icon will expand or shrink with the center of the icon as an anchor point.
When you want to apply precise dimensions to the icon, use the dimension fields in the properties (icon info) panel. With the icon selected, enter number values in the Length, Depth or Height fields. The icons are two dimensional, so the height is not applied graphically. However, when an icon summary is included in the printout, the height is listed for icons.