What is the the option "Prcocess messages" in the Exchange Processing Wizard (EPW) under the "Select Object" mean?
Selecting this option will process the permissions on messages.
For detailed information on the permissions for messages that EPW process, please refer to the following Microsoft article:
- Permissions Available in Exchange: http://technet.microsoft.com/en-us/library/bb123776(EXCHG.65).aspx
At anytime during the wizard, if there is something unclear, the F1 key can be pressed. This will provide more information about the option.