Besides the ad slots, you can use ads in widgets ready areas, and in any other custom locations via shortcode.
For all information about the Ad widget and widgets in general, please refer to the Ad Widget page.
To display an ad via shortcode, please do as follows:
- Go to the WP Dashboard > Ads > All ads page
- Find an ad you want to use
- In the Shortcode column, you will find the code to copy (screen)
- Paste it wherever you need, in post content, your custom code or the Text widget