Since you can install multiple Joomla into one website, you need to be able to define one of them as your start page (home page).
By default, the last Joomla you installed via our Softaculous installer will become the homepage of your website.
To change this:
- open the filemanager from your hosting control panel.
- Enable "View hidden files".
- Navigate into the folder of the domain you are working on.
- Click on the .htaccess file and change the line DirectoryIndex to the sub-directory where you installed the Joomla that you now want to become your start page.
- Save the file.