Metrics

Max menu width: Menu can't be wider then this value
Max menu height: Menu height can't be more then this value

Button margins
Width: the number of pixels added to the button width. If you increase this value the buttons become wider.
Height: the same as width but pixels added to the height.
Menu item height: same as height, but working in menus only.

Max width of buttons with text
Working with view modes Icons with Text, for small and large buttons.

Left/Right margin of icon view menu. Margins (empty space) from the left/right edge of the menu. Working in menus with Icons only or Icons with Text view modes.