Com’ on ! Dont be so harsh ! 
In a web browser, type “theIP_of_your_mycloud:32400” to access Plex on your intranet.
Then, log in and access to your settings (the wrench at top right of the screen).
Now, on the left panel, make sure your Ex2 is selected (green check next to it when you click on the litle arrow) and then scroll down to library at the very bottom of the left panel.
Here you’ll be able to perform modification on your library, you can click (at top right) on a button named something like add a library.
You have to set the TYPE (movie, series, etc) and then click on the left side add a folder or next.
