You can create a campaign in two different ways:
1) From the campaign page, select “Create New” in the upper right
2) When viewing a linesheet or custom list, select “Send” in the upper right
You will be presented with the screen below where you can select recipients, enter an email subject and message for the email body. Recipients can be individual people or a SmartGroup.
For more information on what campaign emails look like, please see this FAQ.