Here is the code snipplet I used to get multiple:
{name:'segmentcode',editable:true, hidden:false, edittype:”select”, formatter:'select', editrules:{required:false}, editoptions:{multiple:true, size:7, value:”#getSegmentCodes#”}},
The #getSegmentCodes# is a list of items returning from Coldfusion.
This grid is truly an amazing piece of code that has surpassed my expectations. Once again THANK YOU JQGRID!