Adding the plugins is not enough. You then have to setup what each button does for each program. Go to the wiki and study it for a bit. It should click for you after looking over that and realizing one key thing:
The log is your friend. It shows everything EventGhost sees (turn off the "log only assigned and activated events" at the bottom of the log when setting up EventGhost). If it recognizes your remote driver, when you press a button you will see the code show up in the log. You then drag those "event" codes over to the proper macro within the proper folder within the context folder. Do this for each button on your remote for each application you want to setup. When you add the application plugins the first time, it should have given you a chance to create a pre-setup folder for itself. You should have placed each of them in the context folder.
Also add the plugin "Task Create/Switch Events" to create macros that switch context folder based on the app that is running.
Make a new macro in the root of your configuration, and choose the "Exclusive enable a folder/macro".
When the next dialog pops up, choose the appropriate application folder within the context folder.
Leave EvenGhost open and launch the program you are setting up. Look for the Task.Created.xxxx and Task.Activated.xxxx "events" in the log. Drag those over from the log to the "Enable exclusive:xxxx" macro you just made. Make sure you put those events ABOVE the enable exclusive:xxxx action. (I grab both of those events because it switches the mode when the app is created or when switch to from another app using the alt-tab or another fancy EvenGhost macro)
Make a macro like the above for each app you want to control, just make sure with each one you select the proper folder within the context folder.