Hi,
Have a look at the attach file to explain how to add a model to an existing symbol, I hope this will help.
The model from Maxim website contain all for op-amp sections inside the model, I prefer to use only one section and had to remove a small section of the model. It will work the same.
You can also find more information for creating a component by visit the link shown below:
http://zone.ni.com/devzone/cda/tut/p/id/3173
Tien P.
National Instruments
