Hello,
I am a Magento 2 developer with 4 years of working experience in it.
If you are still looking for your solution, then I can help you with that, and as I can see for point 1, it will be easily possible via configuration.
For the point 2, Since you havent mentioned the name of the shipping method, it would be little difficult to confirm, so please let me know the name of the shipping method, and I will help you with that also.
Thank you