Procedure
- Open the Symbol form.
 - Click the Extensions tab.
 - Click Attribute Object Filter.
 - 
             Specify sets to match extension fields to an object. 
            
               - Display Indicator
 - Reserved for system use only.
 - Multifield Count
 - Reserved for system use only.
 - Required Indicator
 - Specify if a value for the extension field is
                        required (1) or can be empty (0). No value in the field = 
NULL (2). - Set Code
 - Primary Field Name in the Dependent Field Cross Reference form.
 
Extension fields with sets that match the sets for an object display in the object. Suppose a set (e.g.,
BAKERY) is assigned to the extension field in the Symbol form and the set is added to the object; then, the extension field is displayed. If the set is not assigned, the extension field is not shown.