DSV Articles:
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. 
Shipping rates
Once you have connected to your carrier, you can start building your desired shipping rates with each of the services available on the carrier.
Navigate to Connect > Order channels > Select your channel > Add Shipping rate.