<select multiple="multiple" ng-model="Company_Name" ng-options="c.name for c in options.Company_Name"></select><label>L6</label><br/><select multiple="multiple" ng-model="L6" ng-options="c.name group by c.group for c in options.L6"></select><label>L5</label><br/><select multiple="multiple" ng-model="L5" ng-options="c.name group by c.group for c in options.L5"></select><label>L4</label><br/><select multiple="multiple" ng-model="L4" ng-options="c.name group by c.group for c in options.L4"></select>