tar xzf cpanel-plugin-VERSION.tgz
Press enter use default values when prompted. NOTE: You will need to provide an API key during the install process in order for restores to function. API key's can be found in the "Settings" page of the Bacula4 console.
*NOTE - The cPanel module only works when logged in as the user. If you login as root WHM to cpanel - cpanel will keep you logged in as the root user and the end user restore module will not work as it will not recognize the user or associated Bacula4Hosts data you are looking for.
*make sure cpanel is updated to at least version 11.40.
*if you are getting an error where complete backups are being made but it still appears that the process is running, try executing the following:
# mkdir -p /var/cpanel/apps/
# cp -Rf bacula.conf /var/cpanel/apps/
# /usr/local/cpanel/bin/register_appconfig /var/cpanel/apps/bacula.conf
Plus make sure CPanel API is enabled in the tweak settings.