Good evening Vicky and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
We are sorry to hear about the issue you are experiencing when people click on “Add new organizer”.
I would love to help you with this topic.
As a first troubleshooting step, could you please provide us with your complete system information in a private reply using the instructions found in the following link?
https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Normally, you can add an one or many organizers to an event you are creating. Perhaps this is a permission issue ?
I would recommend reading the following: https://theeventscalendar.com/knowledgebase/admin-roles-and-permissions/
Best regards,
Geoff B.