A Quantity element is a type of Value element that carries a numerical value (such as a floating point or integer value) and can additionally carry a user-editable unit. Some quantities have a read-only (fixed) unit, which means the underlying value is used elsewhere in a calculation that assumes specific units.
The underlying value may be derived from other values or may be fixed as read-only (constant), in which cases the underlying value is not editable.
Like most GreenDesk model element types, this element type has a dedicated web page that can also carry rich user notes and comments, and in some cases also file attachments. This element type can also be related to other model elements.