No actions for this device in scence

I have a handful of smartthings outlets. I have a scene that can turn them all off. I also have a few lights that I control with a scene called “evening off”. I tried editing the evening off scene to add the outlets. Each time I select “Add Action” and select an outlet I get “No actions for this device”. However I was able to edit the outlets in the other scene.

Is there something specific I need to do to add an outlet to a scene?