Create a segment

A forecast segment is a slice of targeted inventory that you use to create forecast adjustments or to revisit the forecast for important parts of your inventory.

Example

Create a forecast segment of all Sports placements and name it "Sports".

Segments can target any component in the targeting selector. Once you create a segment, the targeting cannot be changed.

You can create segments from any of the three tabs on the "Traffic forecast" page.

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Create a segment through the Forecast tab

1. Sign in to Google Ad Manager.
2. Click Inventory Traffic forecast.
3. Click the Forecast tab.
4. Click Targeting and update the targeting of your forecast.
5. Above the forecast graph, click Save as segment.
   If there’s already a segment with the same targeting, the Save as segment button is deactivated. On the right side of the screen, you’ll see the message, "Segment found that matches targeting." Click the link to see the existing segment’s details.
6. Name the segment and click Save.
   The details for that segment appear. Click All segments at the top to go to the "Segments" tab and be able to access the other tabs.

Create a segment through the Segments or Adjustments tab

1. Sign in to Google Ad Manager.
2. Click Inventory Traffic forecast.
3. Click the Segments or Adjustments tab.
4. Above the table, click New traffic forecast segment.
5. Name your segment and update the targeting.
6. There are two options for saving:
   • Click Save and return to the "Segments" tab.
   • Click Add forecast adjustment and follow the instructions to add a forecast adjustment.

See segment details

Click the new Segments tab near the top of the "Traffic forecast" page. You’ll see these columns:

Column	Description
Name	Click the name of a traffic segment to see its forecast and a list of related adjustments. The projected values are estimates, reference a sample of the overall data, and are not guaranteed. Click Download CSV to download a report with the daily numbers from this page.
Targeting	The targeted inventory that applies to the segment. Hover over the icon for details.
Forecast adjustments	The number of forecast adjustments that were created using this segment.
Date created	When the segment was created.