How can I edit multiple features' properties all at once?
Select the Features

Select multiple features. To open the Edit Features dialog, click Features → Edit Features.
Specify the Changes

Choose color, type, directionality and whether to "Translate these features in Sequence view" for all of the selected features, then click OK.
View the Updated Features

All of the selected features will now have the specified changes. In this example, the color of the CDS features were all changed to red.