How to add payment terms (time) in manual payment capture option?

Hi!

Where I can find and add automatic payment term for order which has manual payment capture option.

As example: Order came with prepayment option and I want to set 7 days for payment time after I send invoice. When I does not mark paid by myself then show Overdue. Please see file where that info located in Order.

Or it just to do manually for each order?

Waiting for help.

Ēriks