There are two ways to display tasks in a processing activity:
Task icon for certain fields: When you open a processing activity, you may see a task icon next to certain fields. Click on this icon to see the tasks that relate to the respective field.
Info area/meta view: Select the Tasks tab. This will give you an overview of all tasks associated with the processing activity.
Tip: With the “Open tasks” filter in the overview of processing activities, you can easily see where something still needs to be done.