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The options above are default. You can find out more about the options by visiting the PxrCryptomatte page.
Note that after you create a Sample Filter, another empty connection will be created, allowing you to output Cryptomatte files using different criteria. For example, if you wanted one for per-object and another per-material, create another PxrCryptomatte for output and specify another name for the file.
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Tell Cryptomatte you want to use: identifier:lpegroup
When choosing identifier:name it will return the instance (transform)
When choosing identifier:object it will return the leaf level shape node.