Job Market has provided you a convenience way to manage your Personal Profile. In some categories, you may have more than one item, such as:
If those categories have more than 1 item block, you may also find there is a minus box, e.g. [-] under each block items. Unlike plus box that have only one for each category, minus boxes are appeared under each block items if any individual category have more than one. Once you click that minus box, the whole block of item records will be remove immediately.