[usa1009]

Решение нашел. Class WorkflowConfigurationForm

void getNotificationListAssignTo_clicked(Common record)
{
WorkflowConfigPersonPickerControl workflowPersonPickerControl;
WorkflowConfigControlData data = this.setControlData(record);
WorkflowNotificationTmp notification = record;
WorkflowStep step = WorkflowStep_Task::construct();
// добавил
SysDictWorkflowElement sysDictWorkflowElement;
// добавил
;
// добавил
sysDictWorkflowElement = new SysDictWorkflowElement(WorkFlowElementType::Approval, tmpWorkflowElementTable.ElementName);
data.parmParticipantProvider(sysDictWorkflowElement.participantProvider());
// добавил
//закоментировал
//data.parmParticipantProvider(classstr(WorkflowUserGroupParticipantProvider));
//закоментировал

// hierarchy resolution not available for notifications.
data.parmHierarchyProvider('');

step.parmConditions(configuration.parmConfigurationConditions());
data.parmStep(step);

workflowPersonPickerControl = WorkflowConfigPersonPickerControl::newForm(tablenum(WorkflowNotificationTmp), fieldnum(WorkflowNotificationTmp, AssignTo));
workflowPersonPickerControl.clicked(data);

configuration.parmConfigurationConditions(step.parmConditions());
}