Freeze the first 2 rows of a datatable

Hi guys, I need your help here..

My mission - Freeze the first 2 rows of a datatable. I found absoluteOrder as a tool that might be a good solution for it but i'm open to any suggestions!

My problem - I want to freeze the entire first 2 rows only by using nameType1 and nameType2. e.g. Let's say I have a table with n columns, I need to check if nameType1 or nameType2 are exists in the first column and if so, no meter if I will try to sort the table from column 1, 2 or n, the first 2 rows will still be on top all the time, no mater what.

var nameType1 = $.fn.dataTable.absoluteOrder( 'X' );
var nameType2 = $.fn.dataTable.absoluteOrder( 'Y' );

table = $('#example').DataTable({
"columnDefs": [
{ "targets": 0, "type": nameType1 }
{ "targets": 0, "type": nameType2 }
]
});

I know that that this piece of code not working as I need it to be work, but this is where I'm now ^.^
I will be glad to get your support!