Why, I presumed you were involved. Thanks again for your help, but, nonetheless I think that Elgg developers should be at least as eager as me to have a top class, easy to use and "visible" calendar plugin for Elgg. In other words, I don't mind contacting the plugin authors, but I'm sure you (developers) contacting them would be far more useful to attain that goal.

Greetings.

I'm one of the authors of those plugins - the composer step is necessary to include third party libraries that it depends on, it's nothing all that complicated.  Just run the command once the plugin is in your mod directory and it will work.

I agree with Alejo Becerra Díaz that we need to have a top class, easy to use and "visible" calendar plugin for Elgg. Not sure how to run the "command once"   on cpanel based web hosting - any step-by-step guide for it ? as other plugins apparently do not need this step.

By the way does not Event Manger https://community.elgg.org/plugins/736695 and the Calendar add-on for it does similar thing? I am not sure so will like to know.