By default, Viewability Tools is enabled on 90% of the traffic. However, you can adjust this setting if needed.

The traffic split is controlled at the Domain level, individually for each Domain. You can modify it in Inventory > Domains > (edit) >Viewability Tools: Traffic Affected [%].

Select which ad units shall be handled by Viewability Tools

Attention: By default, Viewability Tools is disabled for all Ad Units.

To do that go to Inventory > Ad Units > Toggle Viewability Tools <on> on the ad units where you want to enable it.

Good practice: To enable Viewability Tools on all Ad Units with a single click, click the three dots next to the Module name and select ‘Activate on all Ad Units’.

Select how particular features should work on each Ad Unit:

• On: Enabled for 100% of the traffic handled by Viewability Tools.
• Off: Disabled for 100% of the traffic handled by Viewability Tools.
• Auto: The share of traffic where the feature is enabled is automatically determined by the algorithm.

The defaults for particular features are:

• Ad holding: <off>
• Scroll slowing: <auto>
• Lazy loading: <auto>

To do that go to Inventory > Ad units > (edit) > Viewability Tools: Basic settings

Good practice: If you need to edit a lot of ad units at once it is recommended to use Bulk Management