In-baskets are used to filter work items in a queue. Only items that are appropriate for a specific role are displayed.
An application space organizes the resources for a custom application that uses a workflow. You define roles for users, such as a Clerk or Approver, in an application space. The roles determine who processes the various activities in the application and the appropriate access that they have to specific in-baskets. You must create the in-baskets first before you can assign in-baskets to specific roles in an application space.