Is there a way to freeze a column when scrolling left to right for a large (wide grids)?

I think you are looking for this feature:
http://demo.koolphp.net/Examples/KoolGrid/Scrolling/Frozen_Columns/index.php
Please follow the code in the example

$grid->MasterTable->FrozenColumnsCount = 2; // You want first 2 columns will be frozen

Nail on the head!