This attribute is only a placeholder so that all the ISM attributes are not shown
in the schemaGuide for every element. If you refer to the documentation of the
attribute group it will say what attributes should be here.
Source
<xsd:element name="AccessIndividual"><xsd:annotation><xsd:documentation>A system name followed by 1 or more Individual values representing the people that a user wanting access to the document must be a member of.</xsd:documentation></xsd:annotation><xsd:complexType><xsd:sequence minOccurs="1" maxOccurs="1"><xsd:element ref="ntk:AccessSystemName" minOccurs="1" maxOccurs="1"/><xsd:element ref="ntk:AccessIndividualValue" minOccurs="1" maxOccurs="unbounded"/></xsd:sequence><xsd:attributeGroup ref="ism:SecurityAttributesGroup"/></xsd:complexType></xsd:element>