Yes. Definitively possible. You might need to import the attribute or dictionary onto nps but the attribute you want is called "Ruckus-User-Groups". You can find some more details here. https://support.ruckuswireless.com/do...
Googling for that specific term should lead you in the right direction.
If you don't have a support account you can get the radius dictionary here
But from what I understand you have to load the dictionary manually (meaning add the attributes by hand if they are not there).
If using zone director I believe that's it. Just return the name of the role you defined in ZD and it should take. In smartzone I believe you have to create a mapping between the string received in radius and the actual role you want to use. In ZD it's a one to one mapping if I'm not mistaken.