When you want to have a client, care provider or supervisor join your organization, you can either create the account for them or you can simply send them the link where they can sign up and create their account.
Simply go to your organization admin's dashboard and under the name of your organization you'll see the "View Register Codes". Upon clicking on this button a small window will appear where you can copy the link that you can send them to register to your organization.
Please Note: There are different links for different roles.