No Mark as filed buton in GSTR -3b

No Mark as filed buton in GSTR -3b

We are filing our GST in GST portal -and want to mark GST in Zoho books as filed. It is possible to mark GSTR 1 as filed through Mark as filed button. But there is no such button in GSTR-3B. 
How to mark corrosponding GSTR-3B as filed?