How to implement max_user_ip to specific user?

["chowalit.lab Chowalit Lab Linux" <chowalit.lab@xxxxxxxxx>]

Hi all,
    In my squid box. I have 2 groups of user to access specific
permission. In first group , they can access only one IP address. In
second group, they can access from two difference IP address. How to
define acl and http_access to support my rule?

Thanks
Chowalit