How to amend the due date of an invoice before it is sent out?

[visualtron]

Hi, I'm a newbie, I want to find out how I can amend the due date of an invoice when making a new order for a Product/Service for a client before it is sent out?

 

When I click "Place New Order", there's a generate invoice checkbox. If I were to create the new order with this option checked, an invoice with Due Date = Issue Date will be sent automatically to the client. Alternatively, If I were to leave this option unchecked, an order will be created, but I can't see a way to generate an invoice. Under Payment Status for the Order, it says "No Invoice Due".

 

On the other hand, I found out that it is possible to convert a 'Quote' to an invoice, which I can alter the Due Date before hitting Send Invoice Created. I can also create a New Invoice under Client Profile.

 

However, both options will not allow me to select a Product/Service (with recurring billing), so they are useful only for adhoc billings.

 

Has anyone found a way to over the problem?

[sochart]

Any idea ?, same problem