When you create a new distributed application you need to select a management pack to store it in. If you later would like to see in which management pack you stored it, it can be difficult to find a way in the console. But there is at least one way:

1. Navigate to Authoring, Distributed Applications
2. Right-click the distributed  application and select Edit… from the menu
3.  In the Distributed Application Designer Window, select a component group
4. In the component group details pane, click Configure Health Rollup
5. In the Override Properties window, you will see the management pack under “select destination management pack”