How to access and install applications in Softaculous
Log in to cPanel (URL: yourdomainname.com/cpanel).
Navigate to the Software/Services section. Click on the "Softaculous Apps Installer" icon.
The Softaculous main page will appear.
Expand Categories on the left side panel. Look for the app you want to install.
Click the name of the application you want to install. (Wordpress as for this example)
Click "Install" in the tab.
If you want WordPress on the main website to use your domain name, then make sure that the "In Directory" option is empty.
Fill in the app installation information and click "Install".
Done. Your application will be installed immediately.
Note: Change yourdomainname.com to your domain name.