When you install a Garritan library, you are asked if you want to install the Standard set, the Notation set, or both. There are three major differences between these sets but one is that the Standard set will utilize auto-legato instead of the sustain pedal. If you would prefer to use the sustain pedal for your work then you will need to use the Notation version of the sample in the library.
You can learn more about the differences between the Standard and Notation sets in the User Manual for Garritan Personal Orchestra 5 here: Directory of GPO 5 instrument patches.
The patch names in the Notation set are preceded with "n-" as seen below:
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