<IfModule mod_userdir.c>
 #
 # UserDir is disabled by default since it can confirm the presence
 # of a username on the system (depending on home directory
 # permissions).
 #
UserDir enabled user1 user2 user3 user4 user5 user6 user7 user8 user9 user10 user11 user12 user13 user14 user15 user16 user17 user18 user19 user20

 #
 # To enable requests to /~user/ to serve the user's public_html
 # directory, remove the "UserDir disabled" line above, and uncomment
 # the following line instead:
 #
 UserDir public_html

</IfModule>

<Directory /home/*/public_html>
Options Indexes Includes FollowSymLinks
##For  apache 2.2,Please use:

 AllowOverride All
 Allow from all
 Order deny,allow
  #For apache >= 2.4,Please  use :
  Require all granted

</Directory>