Layers Tab
There are navigation buttons at the bottom left of the corners tab. The fields can also be navigated using the arrow keys or the mouse. When moving to a new line, any changes to the current line are a

There are navigation buttons at the bottom left of the corners tab. The fields can also be navigated using the arrow keys or the mouse. When moving to a new line, any changes to the current line are automatically saved.
There is a calculate button
at the bottom right of the tab. Press this button to recalculate project, updating the material volumes.
