Adding shipping and handling fee to commerce

How do I add shipping and handling fees to ecommerce carts? I don’t see a best practice or direction on this anywhere.

Go to eCom configuration select shipments

Thanks I don’t see where this is… eCom configuration?

Thanks for the response could oyu plese xplain this furtehr I see no place fopr this no eCom configuration

Ok I’m on a trip in South Africa for the moment with no computer. Will se what I can do with my iPad

Thank you, I was able to figure it out. I appreciate your help!