Hi ​@Hotel50132 - Thanks for reaching out!

If you’d like to remove individual invitees from the event, this would need to be done through the Meetings page here: https://calendly.com/app/scheduled_events/user/me

Once here, you’ll select the scheduled event you’d like to adjust, and either Cancel it or Remove the Invitee here:
 

Let me know if you have any questions!

Thanks for super-fast reply! Is there a way to reset ALL invitees of the day once and not one at a time?  I think it's natural, in a testing phase, to create many invitations to see how everything behaves and then, after 10-15 tests and optimization, move on to the really "live" part... but to do this I have to delete all the invitations one by one? I hope not

thanks again

OK it’s enough to click “Cancel”