Hi, I consider buying Billings. One question: How do I edit the "Kind" of Working Slips. When filling out for the first time I have five choices (flat, timed, quantity, mileage, expense). But when I want to change it from flat to quantity, but now quantity no longer is among the options. Is this a bug?

Furthermore, I'd prefer that "flat" would not be displayed with hours and minutes in the invoice. When a price is flat, then the price applies regardless how much time was spent.

What do think?

Thanks for your help!