Share "my reports" / admin report with other admins

Hi,
In my 360 evaluation, I created a global overview report in the "my reports" section.
I would like to share this with another admin, so that we can work on improving the report together. However, I can't find a way to share access to the report, I can only find how to download the QRF file.
Is there a way to grant access to the admin report?