Every element has a number of different properties that determine its size, geometry and appearance. You can edit these properties to suit your needs.
Note: You can’t edit elements in the catalog panel. You need to use the Catalog Manager.
To edit an element in a catalog:
Select File > Catalogs > Catalog Manager, or right-click an element in the catalog panel and select Catalog Manager.
Select the appropriate element type from the Element drop box.
In the Select a Type window, select the group containing the element you want to edit.
In the Select an Element window, select the element to edit.
Select Catalog > Element Properties, or right-click and select Properties.
Edit the properties as desired. See Working with Property Pages.
Click OK to return to the Catalog Manager.
Note: Editing elements in a catalog has no effect on elements already inserted in your drawing. It only affects future insertions of the element.