it is too much to ask a website management plugin
like a nginx manager, and or something to help to make subdir website like http[s]://nethserver/app1, http[s]://netserver/app2, etc…
Do you have ever used shared folder web access? You can do the same thing, easily.
Yep I just saw it, weirdly, my installation without error, did’nt show my all plugins NethServer Team did.
Exemple : I had MySQL but not Web in my Software Center 
Please share a screenshot of your software center, installed and not installed modules. You should have a Web Server modules (apache)
yes I have Web server into Installed, but I’d reinstall too
so with your previous explanation
I just need to put stuff into /var/www/html and this is it ?
Nope, take a look at this:
http://docs.nethserver.org/en/stable/shared_folder.html
precisely at this section
http://docs.nethserver.org/en/stable/shared_folder.html#web-access
my bad, i always taught web access was link to webdav thanks!