In Activity Messenger a user is an administrator whereas participants are your customers - recipients of messages. A user is someone who can manage lists, send messages and add other users. You can invite users per organization meaning a user may not have access to the same organizations as you.
Click on the main organization menu and choose Manage users. You will land on this page:
You may add new users via email. They will get an invitation to activate their account afterwhich, they will have access to your organization to create lists and send messages.
Activity Messenger keeps on improving. Receive our newsletter and don't miss a thing.