You use the task distribution options to create instances of a Human task.
You can configure the options to create task instances based on the number of items in the data set, or you can configure options to create task instances based on the values in a column you select.
If you select the option to create task instances by text, you define a user list that you must use when you configure the task steps. If you select the option to create task instances by number of items, you do not define a user list.
If you change from one task configuration policy to another, you discard the previous task configuration.