If you were absent from a recording session, you can still be a part of the online presentation! Here are the steps:
Email Mr. Lathe to let him know you will be submitting a recording.
Go to practice.yccm.org and find the rehearsal and song you will be submitting
Record yourself (with headphones or ear buds) singing the song(s) from the rehearsal recording
Submit by using wetransfer.com (using glathe@youthchorale.org), or using Google Drive or other service you are familiar with.
Let Mr. lathe know if you have any questions.