In the present version seller can not choose shipping option. We have added new feature for shipping which will available in our next release. Our next update will release today or tomorrow. Please keep patience. Hope our new update will make all the customer happy.
I was just looking at this exact thing. As I take it:
1) Woocommerce shipping must be set up in admin with set values that a store has no control over.
2) Woocommerce shipping has good options such as Pick Up, Local Delivery, Flat rate etc.
3)Doking shipping addon is advantages to a store as they can choose exactly what price is needed per item due to size and location.
4)Doking shipping addon can only select a country or everywhere else which is far too broad (especially if you are setting up a website mainly based in a single country).
If it is not already in the pipeline, I may suggest that you can add all these shipping options the same as Woocommerce into your Dokan addon. This means each store can choose and price exactly how much each item will cost to what area of one country.This way we will not have to use the woocommerce preset options at all.