Using Process Data to Create Tasks

Create User Task To View And Assign Data
 Selecting this option creates a user task with the process data as an In/Out parameter on the Interface tab. This means that in the runtime environment, users are able to display the associated form to view the field and also to assign new values to it.
Create User Task To View Data
 Selecting this option creates a user task with the process data as an In parameter on the Interface tab. This means that in the runtime environment, users are able to display the associated form to view the field, however they cannot assign new values to it.
Create User Task To Assign Data  
Selecting this option creates a user task with the process data as an Out parameter on the Interface tab. This means that in the runtime environment, users are able to display the associated form to assign new values to the field.