Hi @Vidya Aeil ,
I don't think you can Re-size the VIP icon as in the style for the "Caller_id" field you don't have anything where you can re-size, but you can change the Image if you want :
1. Go to field style for incident table for the field named caller_id and replace the style with below code: (this will show the image in list view)
background-image: url('images/icons/<name of the newly uploaded icon>');
background-repeat: no-repeat;
background-position: 98% 5px;
padding-right: 30px;
2. Also change the name of the icon in Highlight VIP Caller client script for incident table.
