As soon as you have a Hushed Profile you can start adding Hushed Contacts to message and call.
1. Click on the "Friends" icon at the bottom of the page.
2. Search for your friends Hushed Profile name and select it.
3. Once the target Profile is open all you need to do is press the "Add to contacts" button and your new contact will be added!
Deleting a Hushed Messenger Contact:
To delete a contact all you need to do is open their profile and press the "Delete This Contact" button. It's as simple as that!