Home → Campaign Manager → Settings → Custom Formats
To create a Custom Format for a spreadsheet export, go to Settings > Custom Formats.
Click on the New button.
Enter a name for the format in the Name field such as Mailing list.
From there add the fields you want to pull by clicking on a Field Gallery section such as Individual.
Click on the field name such as Salutation, First Name, Last Name, etc. to add them to the list on the left.
Click on Save.