Use the drop-down menus 
 to complete the steps for reducing the mailbox server storage,
 1. To access Mailbox Cleanup tools, navigate to_____the tab, and click Cleanup Tools.
 2. Once in the Mailbox Cleanup dialog box, there are different options to choose from, such as_____________
 or Empty Deleted Items,
 3. The____________
 function moves items off the server to an online Office 365 folder.