Please refer to the prerequisites before starting the installation.
This operation is not recommended for deployment but only for testing purposes. Make sure to uninstall this version after your tests.
❶Click on Download Add-ins
On Outlook Windows:

On Outlook Web:

❷Adding the add-in via manifest
My add-ins > Add a custom add-in > From a URL > https://nadine.signitic.app/manifest.prod.xml > Install.
Here is a gif to illustrate the procedure to follow:

#addin #Addin #add-in