How can we use relate field or relationship field in case create in Sugar Portal

I want to know can we add relate field or relationship field in sugar portal create case view? 

I have relate field and relationship field. I have used this field on case creation. But if same field I'm trying to add on sugar portal case creation view then those fields are not showing in layout configuration. So i added it from custom\modules\Cases\clients\base\views\record\record.php to custom\modules\Cases\clients\portal\views\record\record.php. But only lables are showing.

Create case view in sugarcrm Case Module : 

2. Create case view in sugar portal Case :