Absolutely Great shipping plugin – additional packaging box weight

Absolutely Great shipping plugin for woocommerce. this plugin work as we required. i have one question regarding how to add packaging box cost/packaging box weight in shipping cost or on new line on cart page. we have below range of charges 1kg Packing box – weight 150gramms, 2kg Packing box – weight 225gramms, to 10kg Packing box – weight 750gramms or some amount per 1kg on cart weight. how can we implement it.