How to edit work cost?

You can set the cost within the task manually and enter it per hour or per surface. To do so, go to the task, click on "Show cost details" under "Delete task" red button. While registering work cost, click on the dollar symbol.

Total work cost will be calculated according to entered work hours while total cost per surface will calculated according to the treated surface amount which shows total linked field’s surface to a certain task and crop production.