Save and update 2 table

Ah sorry, I misunderstood.

So in that case you should be able to get what you want using an onSubmit action action with the form. It’s a little but tricky, because when the form is submitted the screen switches context to the table where the row is being added to, so you won’t have direct access to the source table. However, there are ways around this. Have a watch of the below video - I think it might help you with this.