Please,
start thinking about the date of your presentation ...
When you've decided, please fill in the form available on the SGDs section and that is also linked just below
https://elearning.ec.unipi.it/mod/feedback/complete.php?id=22581&courseid
I hope that you can see the email address of each participant and can coordinate with your discussant. If not, then the presenter has to put a post on the following forum,
https://elearning.ec.unipi.it/mod/forum/view.php?id=21577
so that the discussant can reply privately by clicking on the name of the person that did the post and arrange the day of the presentation
Cheers
Tommaso