BEx Setting Keyfigure at the time of Creating Keyfigure

Under additional properties tab of the Keyfigure definition
Bex settings maintained at the time of creating characteristcs and Keyfigures are fixed properties and available globally. Once data is loaded for characteristics and keyfigure we should not change the Bex Settings. If we want to change the properties, we have to change in Bex Query Designer.
For every query we can maintain/change the properties for characteristics and keyfigure.