During your live, you can upload a PDF file in order to share information to your participants;
Once you are connected to your live, you can click on the button as below :
You can upload your files as below :
You can decide to restrict this options to moderators only. Please go to each live session in the back-office and select this option in the section "advanced option":
You can also delete your pdf at any time by clicking on "Add a PDF" and clicking on the trash can next to it.