Q: What if I want to have two moderators in the same study session?
A: As long as the two moderators have Researcher permissions in the same Validately workspace where the study was created, they both can join the session as Moderator.
For more information on joining as a moderator, feel free to view this article: https://faq.validately.com/en/articles/1181706-how-do-i-join-as-a-moderator
Q: What if I want to have two sessions at the same time with two separate test participants?
A: The only way to accomplish this would be to launch two separate studies. You cannot schedule two participants in the same time slot on one study.
Session URLs are static. For that reason, two separate studies would be needed and can run concurrently on Validately. You would just need a separate moderator available for each session.