If you would like to add a Sub-Theme, you need to use ArcGIS software to update IMSMA.mxd which is located in ''C:\IMSMAng\server\gis\maps'' folder. As example Victim by Gender will be used.
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[[Image:Customise Subtheme3.png|250px225px|center]]
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'' IMSMA layer Victim User Defined Theme 1''
<li>Then select the highest level for the item, in this case Victims. </li>
<li>Right-click and chose Paste Layer(s). </li>
[[Image:Customise Subtheme4.png|250px225px|center]]
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'' The User Defined Theme 1 copy at its right position''
'' The User Defined Theme 1 copy renamed''
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<li>Rename it and edit the symbolscopy to number 2. </li>
<li>Use the same syntax as another layer for this item e.g. by Type. </li>
<li>Apply the same change to the all the other layers for Gender.