To add a Do Not Call (DNC) list, hover over the Data icon from the Navigation bar and click on DNC, then select Add new DNC list. A pop-up will appear as shown below, letting you choose a name for your new list.
Click Save once completed.
You can then click the settings cog at the top of your screen and select Add number. This will give you two options: add single number to DNC list or add CSV file to DNC list. Single number allows you to add individual numbers to an existing list. Adding a CSV file allows you to add multiple numbers at once. Please bear in mind that a spreadsheet with DNC numbers must be in a CSV (Comma Separated Values) format for this to work.