Hi LeonidS (I can not do @mention because my current membership doesn't allow to Post links)

I want to create something similar to what you have created as a homepage in UNA.IOIs that an index.html page or is it a page created with "Page app"? Is it possible to create a page with "Page app" and turn it into a main page?

As you suggest, I created an index.html page and I published it in the UNA folder, but it does not run unless I rename the index.php file. 

I suppose that I do not have to rename or delete the index.php file, however I am not understanding how I must do so that when entering the network, index.html is displayed first

Thanks.