For example, to specify that users with the Administration, Operations, and Reporting user roles can view the menu item menuItemMyCustomreport for the Reports menu group, add the following lines within the category which defines the menuGroupReports:
<?xml version="1.0" encoding="UTF-8"?>
<features
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="features.xsd">
<category name="menuGroupReports">
<feature name="menuItemMyCustomReport"
allow="administration,operations,maintenance,reporting">
</feature>
</category>
</features>