Use the Advanced > Define > Section Properties > Solid Properties command to access the Solid Properties form and add, modify, or delete a solid property definition. The solid property definition consists of material and behavioral properties.
Add New Property button. Click the Add New Property button to access the Solid Property Data form and define a new solid property.
Modify/Show Property button.
Select the property definition to be modified from the list of property definitions in the Properties area of the Solid Properties form.
Click the Modify/Show Property button to access the Solid Property Data form and modify the selected property definition.
Delete Property button
Select the property definition to be deleted from the list of property definitions in the Properties area of the Solid Properties form.
Click the Delete Property button to delete the definition.