In the hopes of futurely including hte suppliers in the supplier portal ,and managing the exchange of data with them, we are seeking to follow the supplier registration steps in the preview environment. However, we are facing issues with how we should fetch the link to the preview page of the supplier portal:

In the portal management page, at the created partner's invitation menu, we are not finding a reference to the link leading to the aforementioned page, but only the invitation code in the "Advanced" tab:

Is the link obtainable through the invitation page, or within other menu? Is it shared in the Microsoft Learn articles? We haven't yet found it in the documentation.
Thank you,
Henrique