Setup the carrier
Go to Connect > Carriers and find DSV SE in the list.
Click "Create Carrier" and fill in your customer code provided by DSV.
Finally, click "Create Carrier" and the carrier setup is complete.
Once you have connected to your carrier, you can start building your desired shipping rates with each of the services available on the carrier.
Simply navigate to Connect > Order channels > Select your channel > Add Shipping rate.
Read more here on how to build shipping rates.