{{Note | The steps below describe what needs to be done in {{IMSMANG}}. The sub-theme needs also to be defined in the imsma'''[[IMSMA.mxd ]]''' and the map should be imported again. These steps are described in [[How to work with Sub-Themes in IMSMA.mxd]].}}
IMSMA allows you to add up to five customised themes, called Sub-themes, to each of the IMSMA themes. Sub-themes can be created based on '''single-select''' {{IMSMANG}} system fields or Custom-Defined Fields for that theme.
==Steps==__NOEDITSECTION__
As an example, Victim by Gender theme will be used. To add sub-themes:
<ol>'<li>From In the '''Customisation ''' menu, select → '''Sub-Themes Manager'''.</li><li>The Customise Sub-Themes window displays. Each theme contains five blank rows for adding a sub-theme. These are labelled ''UserDefined1'', ''UserDefined2'', ''UserDefined3'', ''UserDefined4'', and ''UserDefined5''.
[[Image:Customise Subtheme1.png|400px|center]]
<div align="center">
<li>Select the row of the sub-theme that you want to assign or reassign.</li>
<li>Click the [[File:FieldViewIcon.png]] button.</li>