Help with email groups

I am running W8 Pro upgrade from W7 and have synced W8 mail to my Gmail account. I have had no problems with the mail and my contacts synced over as well ....all except my contact groups. I have searched W8 and the net and forums and cannot find out how one can create contact groups in W8 People. I tried several formats for entering multiple email addressed in a W8 People contact but nothing works. I am wanting to buy a Surface but need to resolve this issue first since most of my emails go out to multiple recipients. Thanks for any help!!!