1.If the Event is associated with an Opportunity, the Opportunity tab will display information about the linked Opportunity.
NOTE: The Opportunity tab is only visible if you own the EventPro Sales Management Module.
2.If you want to edit that linked Opportunity, click the Open Object button to the right of the Opportunity # field.
3.The Opportunity edit form opens.
4.Make the edits you require, and click Save and Close to return to the Edit Event window.