This add-on is designed to hide the IP of certain users in the following areas:
-Posts & Threads
-At Shared IP's link on users profiles. (When an user's IP is hidden, then their IP addresses will not show up on other alias when this link is clicked)
-At IP Addresses link, in the Admin Panel when editing an user.
To select the users whose IP you want to hide, after installing the add on, go to the Options area in your Admin Panel and select the Hide IP option.
This add on can be very useful for privacy purposes or in case when you are using multiple accounts and you do not want other staff members to view them.