How to use ReFILE

[Trebbor]

I forgot to include certain medical expenses in my and my wife's 2022 tax return.  She claims all the medical so my return is not affected.  I did both tax returns.  My wife gave me permission through CRA to access her tax slips, etc.  How do I submit an amended tax return for her?  I see the option to use the ReFILE service for my return since I received my Notice of Assesment when I submitted my return, but hers only shows "file accepted".  She received notice of assessment from CRA directly.  How do I use the ReFILE service through UFile to amend her return to include the missing medical receipts.  Thank you.