Portal - Adding new records

Hopefully quick question :

Have been revisiting portals after some time and I am unable to enter new records directly in the portal (a la FileMaker)

I can add one programmatically without problem using : ‘elements.portalcontacts.newRecord()’

It may be that this has come up before and I have forgotten it so could somebody set me right on this.

Can you enter a new related record directly through keying data into an empty portal row ?

As far as I now you can not…