You can access the IO Monitor panel by clicking on Program->IO Monitor from the top toolbar in RoboDK once the plugin is loaded. The plugin can be loaded by going to Tools->Add-ins and selecting it from the list.
The plugin by default will open on the Monitor tab, in this tab you can’t edit any values by accident, but you can sort the list by name by value or by type. Simply click on the field at the top of panel to sort in ascending or descending order of that field.