You can use our shared user function by adding manager of your each device which might be helpful. Please see this article about how to use the shared user. http://www.netrohome.com/forum/posts/147 Please let us know if you have further questions.
If you want to interize your system, you can look at this video to find some useful information.
This information is on Netro forum. http://www.netrohome.com/forum/posts/96
Please let us know if you have further questions.