You can view and process Decision activities in WorkSpace if you have the required roles.
You can search for instances sitting in a Decision activity or define a view that includes them. To view the instance details select the instance in the search result or in the view.
When you run a Decision activity it displays a list of variables that determine which action you should choose. Below those variables it displays the buttons that correspond to the available actions. Each button displays a percentage to guides you making your decision. These percentages show you how similar situations were resolved in the past.