Add sources to the audience segment. Click the "Audience" → "List of segments" and click "Create segment".
Click "Add segments": the list contains the segments and data sources you added earlier. You can create new segments based on existing segments.
Select one or more sources and click "Add segment".
Specify options:
- Installed now — if user has at least one application installed at the time of the campaign.
- Installed — if the user first installed the application from the selected category in the specified period of time. You can choose the number of apps from this category.
- Deleted apps — if the user deleted the app from the selected category within the specified time period. You can choose the number of apps from this category.