answer:Create a new slip and set it’s ‘Kind’ as ‘Flat’. Then in put the unit price in the rate field and add one hour to the log. I don’t know if that’s how you’re supposed to do it, but that’s how I do it. If you have the display duration set as HH:MM (in the timers tab in prefs), the quantity on the invoice will be a little odd as it will show up like hours, but if you change it to decimal, you’ll end up with a more normal looking quantity figure for fixed-price items.