To edit an existing account click on the Edit 
button on the User Administration screen for the account you need to edit.
User Administration Edit
Editing an account allows the Administrator to change the email address, password, role type, or email notification associated with the account. Once an acceptable change is made, click the Save 
button to update and save the account.
Usernames are uneditable. If a user needs to change the name on the account, delete the account and generate a new one.
User Administration Update
You can change a CIP user to a Windows user, when the Windows user name is the same, by clicking the Edit button. Select the checkbox for Windows and click the Save button.
If the CIP username is different from the Windows username, you will need to remove the CIP username and then add the Windows username.