For a speaker to appear in the session he is leading and vice versa, he must be attached to this session. There are several ways to do this:
Quick add from a session file:
From the organizer interface, go to "Event Data > Sessions" and click on the session of your choice
Click on the second tab that represents the speakers
In the list of participants, search for the speakers you wish to attach to this session
The speaker in question must already be on the list of participants.
Quick add from a speaker file:
From the organizer interface, go to "Event Data > People" and click on the speaker of your choice.
Click on the third tab "Speaking at".
Search through the list of sessions to find the ones you want to assign to this speaker.
Note* Sessions must be created beforehand.
Mass add by Excel import:
From the organizer interface, go to "Event Data > People" and click on "Add people".
Choose to import via Excel file, select "Speakers" and then download the file.
For each speaker you wish to attach to a session, indicate the ID of their session(s) in column T [Is speaking at (opt)]. You will find the IDs corresponding to each session on the 4th sheet of the Excel file ["Sessions (read only)"].
Re-import the Excel file on the platform and you're done!