MechanicDesk allows you can block the time details from being shown on the invoice and to the customer. You must first create a stock item for the time entry you want to hide, say Labour. Then email our support team at firstname.lastname@example.org with the exact name of the timesheet entry, associated stock item and the workshop ID. We will be then be able to link the timesheet entry with the stock item. Once this is done, we will notify you, at which point you must go into stock item, click on its details and tick on the box "Hide quantity on invoice".
Carrying forward, all timesheet entries of that type when transferred to the invoice will have their details hidden.