Hi Banquet
That's how we solve it nowadays but creating orders from the front end is not really the correct way I guess.
I know there are many people requesting features and addons but I was really surprised not to see this option in the core for the new VM.
It is really a lot of work just to add a "Create" button in the orders section?
I've read lots of post for VM 1.x requesting these but how do people solve it with the new VM 2.0 if the option is still not there?
What we did (in VM 1.1.

is log in as those users (with master password plugin which I don't know if it's available on VM 2.0 + Joomla 2.5) and create the orders.
But I insist IMO this should be a core function and not a requested feature for a plugin or addon, damm even Hikashop allows this option.
Regards