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Click on Rules… button in the left bottom part of the Automatic Replies dialog. Then set the Start time, and then set the End time.
If you want to specify a set time and date range, select the Only send during this time range check box. In the Automatic Replies dialog box, select the Send Automatic Replies check box. Click Automatic Replies (Out of Office). Click File tab and click the Info tab in the menu.
But did you know you can customize your OOF so that some people do not get the auto reply, or that they get a customized reply different than the rest of the group? The steps below will show you how. Out of Office replies can be turned on very easily and even timed to expire at a designated time.