If you would like to change the existing symbols, you need to use ArcGIS software to update IMSMA.mxd which is located in ''C:\IMSMAng\server\gis\maps'' folder.
As an example , Land by Type will be used. The users thought found it was difficult to distinguish between Indication, SHA and CHA and , therefore they wanted to have different colours alsocolors for each of them.
[[Image:Existing_symbol1.png|250px|center]]