Can a leader also be included with the flock members?

I’m a member of the Magnificat Chant Choir and we are using the program for the first time. I’d like to know how the leader can also be included with the flock members to sing as well? If this concept works, we plan on using it every week for choir practice. Can someone help me with that? We have a very small choir and all of us need to be included to sing including the leader. Thank you for your help.