In-article Ads are ads that will show up in the page content.
This is an automatic placement which means that they follows a set of rule that:
This placement conforms to most of the Ads network rules.
By default, in-article ads are not enabled.
You need to set the combo-conf-007 configuration to on.
Because the ads are stored as page, they are by default added to the index.
You need to set a configuration to prevent it.
See ComboStrap Ads - Global Configuration
At this point, no ads is shown because no ads have been created.
To show in-article ads, you need to create Ads pages that follow this naming convention.
inarticleX
where X is the Ads number in the page and starts at 1.
For instance:
AdsInArticleShowPlaceholder is a configuration that will show a placeholder when a in-article ads page is not found.
This is a debugging configuration and is therefore by default off.