Custom shipping plugin output on checkout

Hi

I trying to get my head around how HikaShop works in relation to shipping. I'm trying to develop my own custom shipping method for a client of mine how is a HikaShop business user.

I'd like to display some extra dynamic information where the shipping method is displayed (parcel shops near users address). The user would select a parcel shop and the selection would be stored in a custom field. At least thats the idea.

I've looked at the documentation, and it seems I should use onShippingDisplay, but I can't quite figure it out.
Can you give any pointers as how to get around this challenge?

Thanks

Thank you for the pointers.