I would like to set up a web calendar as part of my website and have found that the options available through Installatron are either out of date or not suitable. For example 'WebCalendar' has not been updated since 2013 and is not compatible with the current version of php.
Am I able to install applications myself apart from the ones available on Installatron? Is so, how do I do it?
Generally you would download a *.zip file from the developer, upload it to your hosting account and extract it to the desired folder. Create a database if needed then run the application setup (like yourdomain.com/example/setup.php).