how to change the default number of records to display and instead of number use a head column field

Good Afternoon,
reading this:

https://datatables.net/forums/discussion/162/how-to-change-the-default-number-of-records-to-display

I would like to know if is possible instead of number use a column field for example using this:

https://datatables.net/examples/basic_init/language.html

I would like to have "OFFICE" as select input and have a modified table with all the record that are matching the office field.

Best Regards,
Andrea