Add a Collaborator: Follow these steps to add a collaborator: support.eventcreate.com/en/articles/5942068-how-to-add-a-collaborator

Publish, but Password Protect: Add a password to your event website and then publish. Then, you can share the URL of your event website with anyone who needs to see it. Once you've received feedback, feel free to remove the password and share widely. To add a password to your website, please follow these steps: support.eventcreate.com/en/articles/1638080-how-to-make-your-website-private-or-password-protected

Create a Shared Login: Choose a general email address and password and share login credentials with your planning team.