Step 1 Log in to the TEW-637AP by entering its IP address into a browser.  The default IP address is 192.168.10.1.  The default user name is admin.  The default password is admin.
Step 2 Click on "Administrator" on the left hand side then click on "Management".
Step 3 Enter the desired Administrator user name under the "Account" field and then click "Apply".  Below are the character limitations for the Administrator user name:
Number of characters: 16
Special Characters: OK (e.g. &, *, #, etc.)
Spaces: Not allowed
Case Sensitive: Yes