1) Login to cPanel and click on Softaculous App Installer.
2) Click DotClear from the left menu.
3) You will be taken to the Overview page where you can view more information about this particular software.
4) Click the Install tab.
If you have multiple domains associated with this account, you can select where to install it.
5) The next two boxes require a directory and database name, neither of which should exist on the server.
Under Site Settings, enter a Site Name. This can be changed later on from the application's admin panel.
Type the desired admin username and password that should be used. Also, enter a First and Last Name that will be displayed and the admin's email.
In most cases, the defaults above should work fine.
6) After a moment, the software will be installed.
7) Once finished, you can see the message "Congratulations! the software was installed successfully!"