1. On your computer, open Gmail and click Compose .
  2. In the To and Cc fields, enter recipients as you normally would, and write your subject and message.
    Read receipts aren't returned for messages you send to a group mailing list or alias.
  3. Click More options 
  4. Click Request read receipt.
  5. Send your message.
    You can see your read receipt when you open Gmail. The person you sent the message to may have to approve the read receipt before you’re notified. 

If You don't get to see the read receipt Contact your IT admin 

Things IT Admin needs to do to activate Read Receipt 

1. Login to G suite Admin Console - Admin.google.com

2. Hover to Apps-G suite-gmail-user settings-email read receipt -select Email read Receipt to be sent on any email address

Once done it will take some time to reflect .