How to install a script using Softaculous
1) Click on the 
icon with the 'Software/Services' section of your cPanel.
2) Select the script you're wanting to install.
3) Choose your protocol from the 'Choose Protocol' drop down.
4) Choose the domain you're wanting to install the script on from the 'Choose Domain' drop down.
5) Specify the directory you're wanting to install the script into in the 'In Directory' text field.
6) Specify the site's name in the 'Site Name' text field. (if applicable....the name of the field might be board, wiki, or something related to the type of script you're installing)
7) Enter the site's description in the 'Site Description' text field.
8) Change the 'Admin Username' to something other than admin or Admin because those are too common of usernames that make it easier for a hacker to brute force.
9) Specify a secure password in the 'Admin Password' text field.
10) Specify the admin email address in the 'Admin Email' text field.
11) Select your language from the 'Select Language' drop down.
12) Click the 
button.
Keywords: WordPress, Joomla, Drupal, phpBB