The callout tag consists of the callout head, callout bubble, and leader line. (See Callout Tag Parts.) Use the Family Editor to create a callout head family to define the shape of the callout head and the information that it contains. In a project, create a callout tag to specify the callout head family to use and the radius of the corners of the callout bubble. To define the line weight, color, and style for the callout bubble and leader line, click Manage tab
Settings panelAdditional Settings drop-down, and select the appropriate tool.
Parts of a callout tag