When you add a new user to the Consensus Platform they'll receive an email notification letting them know they've been added.
The new user will need to Verify their Account and then they'll be able to access the Consensus Platform.
If you've already been added to the platform then you'll go to https://app.goconsensus.com/signin to sign in. If you don't remember your password you can always prompt the system to send you a reset password email:
Once you have the email you'll click the link and it will allow you to reset your password.