# List Management

## Blocking Categories

Control the type of ads displayed for specific apps by blocking specific categories. By default, all apps will use the standard list which follows the Chartboost [policy on prohibited categories](/en/partners/exchange/creative-content-guidelines/). The current taxonomy of the IAB category list is 1.0.

Create your custom lists and apply them in the app's [monetization settings](/en/monetization/publishing/monetization-settings/#blocking-specific-categories).

1. From your [Chartboost platform](https://platform.chartboost.com/){:target="_blank"}, click on the upper left ![](/assets/images/core/icon-navigation.png){: height="30"} icon. Then select **List management** under **MORE**.
2. Create your custom list by clicking the **+Create new list** button.
	- Provide a **List name** and select the categories to block
	- Please note that 26 categories cannot be removed in adherence to Chartboost's [Terms & Conditions](/en/legal/terms-conditions-addendum/).
3. To edit or delete a custom list, identify the list then click on the **three-dot icon** to the right.
	- Deleting a custom list will revert any apps using the list to the **Default Categories List (Taxonomy 1.0)**.
	- The default list cannot be modified.

## List Management API

Refer to the [List Management API](/en/monetization/reference/list-management-api/) documentation.