Hi @Anonymous,
Not sure what is your exact need.
Do you want to display a special record like the form last submitted in the detail form and new form in a same screen?
I am confused why you want to display an empty new form in the screen, anyway, check the following steps.
Set the OnSuccess property of the submit button as below:
NewForm(Form1)
This will get you a blank detail form and a new form once you submit the form successfully.
If you want to display the last submit record within the detail form, you could set the Item property of the detail form as below:
Form1.LastSubmit
And do not forget to set the OnSuccess property as the NewForm() function.