Dialog Box:  
Form Conditions
| Condition | Specify the conditions that define when the subpanel is opened. Click the {..} button to open the Insert/Edit Variable dialog box. Select a variable from the system properties list and add a condition to the variable. For example, a condition could be: system.retention > 1.0 AND system.retention < 5.0 (example for an AND operation: the conditions becomes TRUE if the retention time value is between 1 and 5 minutes). | 
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| Form name | Select a subpanel from the drop-down-list. | 
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| Form caption | Indicates the title of the subpanel that was defined on the General tab page of the Form Properties dialog box. | 
For details about how to create a script button that opens a subpanel, refer to  Creating Hidden Windows.
 Creating Hidden Windows.