A library entry contains one spectra normally. I would suggest you create quant database for the peaks then use it to identify the resin.
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The GCMS software does not have this feature.
We have a software package for GC only data: Openlab CDS match compare will compare a data file against a database of GC chromatograms.
This is the feature you are looking for, but it does not work with GCMS data.
See the link below if you want more info about the match compare software.