Naming Devices on the 2704N router

[#1]

On my previous Technicolour router there was the facility to assign a Name to any Devices that were listed as Unknown.
I am trying to locate the same facility on my new 2704N router,
PlusNet technical support have guided me to the 'expert' router area (http://192.168.1.254/expert_user.html) but whilst they assure me it is in there somewhere they cannot actually tell me where!
If anyone can assist it would be much appreciated.

[#2]

So its not just me that is struggling to find stuff like this on this newer model router

[#3]

Hi andyg67,
I have looked through this today, and as far as I'm aware this is no longer an option offered. They are right it might be buried somewhere in the expert user settings but I can't say for sure. I have never been able to find this option myself so it may be just that the Sagemcom doesn't support this. Really sorry about that.