You can add your own placement to Advanced Ads. The example below does that for a specific action hook. You can adjust it according to your own purpose.

Just change the ADVADS_CUSTOM_HOOK_PLACEMENT_HOOK_NAME to any action hook you want to show the ads in.

The whole code from below can go into a new PHP file which you can then move to the wp-content/plugins folder to work as a custom plugin.

When enabled, the plugin adds a new placement type to which you can assign ads or set options like labels or cache-busting.