Documentation
Reset the password for a user
inSync On-premise 5.4 Administrator Guide
On-premise Editions: 
Private Cloud Enterprise Professional
Private Cloud Enterprise Professional Procedure
To reset password for the users
- On the inSync Master Management Console menu bar, click Manage > Users.
- Select the users whose password you want to reset.
- Click More > Reset Password.
- (Optional) Update the subject and body of the reset password email.
- Click Reset Password.
inSync sends an email that contains the new password to the users.