Hi Maher,
It seems you got the best answer possible from Julia, but in case you have to add presenters that were not part of your Abstract Management (as in co-presenters added later, or ad-hoc sessions), you can always import them all at once from a spreadsheet. I will note that you would still have to add their pictures one by one though.
Cheers,
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Béline FALZON
Conference Program Specialist II
California Teachers Association
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