Yes, you can! With Group Stars you can recognize an entire work team. Once you've logged into StarMeUp, select the option Send Kudos (default name for the Group Star option, which your organization can customize) and select two or more people that you want to send a joint recognition. Write a message saying why you think they deserve the recognition and then submit the Group Star.
REMINDER
The Group Star is an optional StarMeUp feature that your organization may or may not have activated.