Log in to the Sinch Customer Dashboard and select the Users Management option from the Settings menu on the left panel. The User management page is displayed:
To invite another user to your account, click INVITE A USER. The Invite a user form is displayed:
Enter the e-mail address for the user you want to invite and select a user type role for this user (refer to What user type roles are available? for a description of the different user types). Click SEND INVITE.
Sinch has a new single sign-on login experience that will allow you to seamlessly login to any existing Sinch services that you may use - Learn more about Sinch ID.