Press 'Home' on your remote
Select 'Settings'
Select 'Network'
Select 'Set up connection'
Select 'Wireless'
Select 'UTC'
Locate the MAC Address (sometimes called Wi-Fi Address, Physical Address, or Internet Address). It is always 12 characters long and can contain numbers from 0-9 and letters A-F. It is most commonly in the Settings or Network Settings menu.
Select 'Yes' if you are a UTC student, faculty, staff, or affiliate
Select 'Media Player'
Under the 'MAC address' field, enter the console's MAC address
Under the 'UTC ID' field, enter your UTC ID
Under the 'Password' field, enter your UTC password
Select the device type from the dropdown box
Select 'Submit'
Source Link: https://support.roku.com/article/360010968833-how-do-i-find-the-serial-number-or-device-id-for-my-roku-streaming-player-