On Dashboard, if you want to delete a Freight, you can do as below:
Step 1: Click Rate > Freight >Â Click the tab of transport that has the freight you want to Delete
Example: I want to delete the first row.
Step 2:Â Hover your mouse over the Edit button at the last column of freight you want to Delete.
       Then, Click the Delete button.
Step 3: Click the Delete button to confirm the action.
So, you successfully deleted the rate.