The best way to add users right now is to email me at email@example.com with the email addresses of those you want to add.
If it's a handful, just send me a list.
If it's more than 10, a list of emails in a CSV is preferred.
Users will then be sent the sign-up instructions.
If you want to remove users from the SentiSum platform, please send me an email at the same address with the emails of users you would like removed. I will then send a confirmation email when completed.