In the main menu, click Settings > Sites.
Select the list level: Account or Advertiser.
Do any of the following:
(Optional) To paste or enter up to 10,000 values:
Click Paste in Sites/Apps.
In the input field, enter or paste one value per line, and then click Continue.
(If any values are identified as invalid) Click the Paste in sites & apps tab, correct the values, and then click Continue.
Click Finish.
(Optional) To delete one or more values, do any of the following:
To remove all values, click Clear all. In the confirmation message, click OK.
To remove one or more values, select the check box next to each, and then click Delete Checked.
To remove a single values, click X next to the value.
(Optional) To export the list to a Microsoft Excel spreadsheet in comma-separated values (CV) format, click Export.