Working with Outlook
Select Options from the Tools menu, then click the Delegates tab. Click Add. Enter the name of the delegate you want to set permissions for or select it from the list. Click Add, then click OK. In the Delegates box, click the delegate you just added. Click Permissions, then set the permissions for each Outlook folder you want the delegate to have access to.
To send a message to notify the delegate of the delegate status and permissions you set, check the Automatically send a message to delegate summarizing these permissions check box.
If you want your delegate to be sent copies of your meeting requests and responses, give the delegate editor permission, then check the Delegate receives copies of meeting-related messages sent to me check box.
To add multiple delegates simultaneously, select multiple names in the add users dialog box. The permissions you select will apply to all the delegates.