When you create a timetable, Indico allows you to add a speaker who does not have an account within Indico. Best Practice is not to add a speaker that way because it creates a lot of issues down the road. All speakers need to create an account with the Jefferson Lab Indico system (Jefferson Lab Indico (jlab.org). This will allow you to directly tie the speaker to their talk so they can upload their own material. 

If you utilize adding a person without an account, they will not be able to upload their material even if their name appears. They must have an account and be logged in for their upload material link to appear.