what is the use of Authenticate and May Start check boxes?

what is the use of Authenticate and May Start check boxes?

•  If May Start check box is selected means the activity can executed on its own .if it is not selected activity is should be called by other activity.

• Authenticate means when the external user is trying to access the activity if check box is selected he has to be a authenticate user with PRPC credentials. If it is unchecked any one can access the activity.