After you've drawn an initial model structure, you have to define your variables and their relationships. This is known as "Specifying a Model". There are three items to specify:
2. Give the constant(s) a value.
3. Define the relationships of the auxiliary(s).
Defining an auxiliary is a bit more complicated. Follow the steps below:
2. Click the "Qualitative" radio button in the "Specify Variables" window.
3. Click "OK"
The model changes as follows (note the question mark):
Double click the question marks in your model to open the "Specify Variables" window again, and select the appropriate qualitative relationship from the drop down list.
The meaning of these relationships are explained in the Types of Variables and Relationships helpfile.