Create New Invoice

[Trelltan]

I have a problem trying to make a new invoice when i type in a customers name it forces me to click on the pencil if the customer isent in the database. is it possible to make it so i can just simply put in a new customers name without adding them to the Customer list. i found a way by right clicking the box and clicking on Insert unicode control character and clicking LRO but is there a simpler way?