Changing admin Password in UCSM 3.2 (GUI)

1.    First, log into the UCSM you wish to manage.
2.    Navigate to the following:
    a.    >Admin
    b.    >All
    c.    >User Management
    d.    >Locally Authenticated Users Tab
    e.    >Click on the admin account below
    f.    >Finally, click on the Info tab below
3.    Here you can type in the new password and then confirm in the “Confirm Password” box.
4.    Click “OK” and your new password is updated.

Reference:

https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/gui/config/guide/2-2/b_UCSM_GUI_Configuration_Guide_2_2/configuring_role_based_access_control.html