Yes, you can add other members to be admins of your group. To do so, go to the “Manage Admins” section from the group Dashboard. From here, you can add any number of Admins for your group. These admins will have all the permissions as you currently have to manage various aspects of your group. You can also choose Featured Admins for your group from the “Featured Admins” section in group Dashboard. These Featured Admins are shown on group Profile in a separate block.
You can choose to have your group colleagues, managers, etc as admins for your group, and have them assist you in keeping your group active and updated.