You need to select the group of members that you would like to display. Currently from the image of the widget, there is only one member in the group you're wanting to display. If you hit the drop-down you will see the other available groups in the workplace. The drop-down will show you member groups for the entire workplace, or for specific space member groups.
You can add more members to the group that is currently being displayed, select another group, or create a specific group you'd like to display.
If you have further questions on this, you can reach out to our support team: firstname.lastname@example.org to further assist.