You can edit segmentations for one or more colorways. To do so, view the colorway, then select Edit segmentations from the Actions menu:

You can also click the checkbox(es) next to the colorway you want then click the Edit segmentations button as shown below:

The Edit segmentations window appears as shown in the below example:

1. Click the checkbox(es) next to the segmentation you want or click the checkbox next Check all to add all the segmentations. 
2. Click Update.