Menu: View→Analysis Properties→Estimation→Fit neither model
Do not fit either the saturated or the independence model. With this option, it is not possible to compute any of the familiar fit measures.
Programming
In Amos Graphics programs, you can select this option by using the following statement (Visual Basic):
pd.GetRadioButton("AnalysisPropertiesForm", "OptionIncompleteData_None").Checked = True