You can send a media plan for approval by select ”Send for Approval” up to the right in the plan mode. Name the media plan and add who should be the approver or approvers. Write a comment or other important information that you want the approver to be notified about. All approvals and comments are saved under versions.
As the approver you can choose to approve or reject the media plan and give a comment to why. The version saved for approval will never be modified. This means that a history of how the plan evolved will be stored in Mediatool.
Compare media plans
If you want to know how versions of a media plan differs from each other you can compare versions and find out how key measurements change.