It is not possible to add multiple shared IP’s from WHM but it is possible to do it from SSH.

First of all we need to create a /var/cpanel/mainips/ directory if it is not present.

mkdir /var/cpanel/mainips/

Then we have to create a file.

vi /var/cpanel/mainips/root

Add all IP’s into it. save the file and quit.

Now login to WHM and check the IP’s

Home>>IP Functions>>Show/Edit Reserved IPs