DentalSegmentator extension installation failed

Dear 3D Slicer Community,
I am trying to install the DentalSegmentator extension from my MAC PC.
When I look for the extension that is built into the software, I cannot find it.
When I download the .zip file with the extension and try to install it manually, I get this message:
“No extension description found in archive”.
Can anyone help me?
Thanks in advance for any assistance.
Riccardo

Hi there,
I found that this link helped me install an extension: