You have 4choices:
1. To cam2cam, click on the guy's avatar or name in the Users List (or in room text area) and select "Request private video call" from the drop down menu. Then you will be in a cam to cam experience.
2. Send a direct message by clicking on the guy's avatar or name in the Users List (or in room text area) and select "Whisper" from the drop down menu. Then you type your message in the bottom text box and click the "SEND". Your message will be highlighted and readable in the main text chat to this person ONLY.
3. You can invite someone to join you in a private room. If they accept your invitation, a new room will be created and you will be able to chat and have an exclusive cam-to-cam conversation with the invited person.
4. Create a password protected private room and invite multiple people inside.