1.From WHM: Main >> Security Center >> Apache mod_userdir Tweak
2.Tick Enable mod_userdir Protection
3.Untick every thing under column heading Exclude Protection
4.Locate the virtual host that you wish to use from the list under column heading Host.
5.Input the cPanel account username, or usernames as a space-separated list, under the column heading Additional Users.
6.Click Save, at the bottom of the page, to submit and finalize changes.