For M3 projects, refer to https://docs.massive.org.au for the updated instructions, as the below is for the retiring M2 cluster.
Account and Project Management System
Existing users can manage their accounts and projects through the user account page. The following describes come common tasks, with direct links (if possible).
Reseting Password: In case you've forgotten your username or password, reset password here.
Joining an existing project: Search for your project leader or the ID of the project , once found select the ID and Submit the request. The account will be processed once the project lead has approved your request and the system has been updated.
Inviting users to your project: Project leads can generate an email to invite new users to their projects. This is available from the project page listed under My Profile > Projects.
Removing users from your project: Project leads can remove users from their projects. This is available from the project page listed under My Profile > Projects > Select the specific project > Click on 'Remove' on the respective Username in the Users List.