You can assign the following roles to users and groups:

You identify business administrators at the Human task level. You can optionally identify business administrators at the step level. Any business administrator you identify in a Human task is also a business administrator in each step in the Human task. When you define a business administrator in a step, the business administrator status applies within the step only.

You can identify task performers at the Human task level and the step level. Identify task performers at the Human task level when you want to assign users or groups to task instances based on the data that the task instances contain. When you identify task performers at the Human task level, the task performers work on the same data for the duration of the Human task. When you define a task performer in a step, the task performers work on tasks within the step only.

You can assign a user and a group with the same name to a Human task. For example, you can assign the group Domain/Administrator and the user Domain/Administrator to the same Human task.