This article describes how you can add a new user to an organisation after sign up
1. Navigate to the applicant page under Users > Applicants
2. Once you have found the organisation you wish you add the user to, Click on the view button on the right and then click on the "Invite Applicant" button on the right hand side menu to start the process.
3. Enter the name and email of the user and click on Invite to add them to the Organisation.
NOTE: If the user already exists under that email address then they will automatically be added to the organisation and if they aren't they will be sent an invitation email to create their account.