Before coming out of application.py, make sure to remove the Save button code, since we've moved that piece of UI to the DataRecordForm.
Look for these lines in __init__() to remove them:
self.savebutton = ttk.Button(self, text="Save", command=self.on_save) self.savebutton.grid(sticky="e", row=2, padx=10)
You can also move the statusbar position up one row:
self.statusbar.grid(sticky="we", row=2, padx=10)