Once the provider has submitted a project, the project starts appearing in the "Pending Review" section on the "Exchange" tab. In addition to using message board and IM for communication you have an option of accepting or rejecting the submission. The comments you provide while accepting or rejecting a project are visible below the project detail page in the "Project Activity" section. If submission is rejected the project goes back in the "In Progress" section; else in the "Closed" section.

After a project is rejected a message is sent to the service provider along with your rejection comments. The service provider would now be required to resubmit the project after making the necessary changes requested by you. The "Project Activity" section in the project detail page displays all the comments related to project submission.