This post will help you in case if you are facing a problem while getting this feature into your Cpanel after installing Softaculous.
If you have installed softaculous on your server and getting trouble to enable this feature in your cpanel. run the following command on shell.
/usr/local/cpanel/bin/register_cpanelplugin /usr/local/cpanel/whostmgr/docroot/cgi/softaculous/softaculous.cpanelplugin
Once you run the above command you will able to locate this feature in the cpanel.
If in case softaculous showing blank page. Create usecpphp file:
touch /var/cpanel/usecpphp
If still doesn't work
Please execute the following CRON command:
/usr/local/cpanel/3rdparty/bin/php /usr/local/cpanel/whostmgr/docroot/cgi/softaculous/cron.php
This should resolve your issue.