This page will help you in importing your installations to Softaculous. (For eg. If you want to import a WordPress Installation.)
Original documentation can be found here: https://www.softaculous.com/docs/How_to_Import_an_Installation
2) Navigate to the Softaculous Apps Installer panel and select the software package you would like to install.
3) First click on the "Import" Tab on the Software page in Softaculous Enduser panel.
4) Then write the name of the directory where it is installed manually or by other auto installer(for eg: wp). And then click on the "Import" button to import an Installation.
5) After clicking on the "Import" icon, the software will be imported to Softaculous and then you can manage the upgrades, backups etc for the installation.