Want to set ringtone & pic for multiple #s instead of 1 @ time

[Robinjo]

I have 275 members in 1 group, 175 in another, and then various friends & family. Would like to have the 2 big groups have different ringtones and pic but 1 at a time is ridiculous. maybe im not smart enough for a smartphone.

[Wildman]

If the device supports the option to group contacts, you should be able to group them together and then add the ringer to that group to have multiple contacts with same ringer quickly... 

[Robinjo]

Yes i can group together but cant figure out how to assign ringtone or pic to all at once. Ideas?