[Koha] Possible to customize koha?

[Carfield Yim]

Currently the advance search contains the following fields:

Any word,Title,Author,Sbject,tem Type,branch,Item barcode,Call
Number,ISBN,Publisher

But my user like to use 

010   - LIBRARY OF CONGRESS CONTROL NUMBER 
a LC control number       
b NUCMC control number 
 
to search... possible done thought config? Or I have to change to perl
code for this?
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