RSVP registration is ideal for "invitation only" events. This type of registration requires you to upload an allowed list of guests, including emails, before sending out invitations through EventCreate or another means.
For details on adding names and emails to your Attendee List, please see https://support.eventcreate.com/en/articles/6094138-how-to-upload-an-invitation-list
With the RSVP registration setup option, we use email verification when guests RSVP. That means only emails on your attendee list can register for the event. RSVP registration requires you to upload an allowed list of guests, including emails, ahead of sending out invitations.
IMPORTANT: RSVP Setup, requires Email Collection
With RSVP setup, you need to collect email addresses during the registration process for the system to verify the attendee. When you go to Registration>Form Questions, email field is Inactive.
If you do not want to collect email address, you will need to change setup from RSVP to Simple Registration.
If you want to keep the RSVP setup, then you will need to make the Email Address field Active under Registration>Form Questions
If you do not have emails for your guests, you can set your event site to private so only people who have the link can access. If you need to modify this setting, go to Setup > Website > Privacy.
We have 2 areas where you can set up a password: 1 for your site and 1 for your registration:
1) To require a password to see your Website, so users cannot see your website until the password is entered, go to Setup > Website > Privacy > Event Page Password)
2) To require a password to RSVP/Register for your event, so users can see your website, but cannot register unless they have a password, go to Setup > Registration > Setup > Registration Access Control & Privacy