The multiple select field in iSAMS requires you to always ctrl+click and always remember what selection that have been selected if you want to edit it. Instead of using this type of multi-select, I suggest iSAMS to use the tickbox with multi selection. This can avoid end-user from making mistakes, and eliminates the need to click the CTRL key to perform the multi selection. (Sometimes when you click the CTRL and scroll through the list, it will zoom the page, because the browser thoughts that we are performing CTRL+Scroll)