IdStory Identity Manager

One way to do this is to add a new formProperty - applicantDescription - to the userTask in the approval workflows, see below:

    <userTask id="approveByRoleGuaranteeA" name="Approve by role authorizer" activiti:candidateUsers="#{candidatesApproveGuarantee}" activiti:formKey="dynamicTaskRoleConceptDetail" activiti:skipExpression="#{skipApproving}">
      <documentation>${processInstanceName}</documentation>
      <extensionElements>
          <activiti:formProperty id="applicantDescription" type="textArea" writable="false"></activiti:formProperty>
        <activiti:formProperty id="disapprove" type="decision"></activiti:formProperty>
        <activiti:formProperty id="approve" type="decision"></activiti:formProperty>
      </extensionElements>
    </userTask>

However, since version 12 (or 11?), the note is visible only for waiting tasks. When you display a task that was already solved, this new element is not displayed. In 10.8, such elements were visible always (at least those formProperties that we use in our custom workflow).