Pickup point and time frame location in checkout

Hi,
We want the dropdown lists for selecting pickup points or delivery timeframe to appear directly below the shipping option. The plugin doesn’t have options to change the dropdown placement after selecting the shipping method, is there any possibility to update the plugin to have this functionality? Right now we can change the add_action hook for the review_order_after_shipping function, but for it not to loop through all of the shipping options it needs an additional function. Editing class_dpd_parcels.php this way works, but once class_dpd_home_delivery.php is edited it only displays the timeframes in the new place when I’m logged in to the admin account (users can’t see any time frame options). I’d appreciate either this implementation to the plugin or any instructions how to properly code this in to the plugin.