A custom Add Order facility has been built in Ajax, which enables staff to manually take orders. The form is connected to an X-Cart PHP/mySQL shopping cart system.
The Add Order functions very well, there are just 3 small bugs that need fixing. Please see attached file for details.
You will possibly also need to edit the source code of X-Cart. This is a live site, so care must be taken to back-up any files before making changes.