Step 1- Tap "Classroom" menu in the bottom menu bar
Step 2- Tap Green "+" icon and click on "Schedule an online class"
Step 3- select "Class", "Subject", "Date", "Time", enter "Link"
Step 4- you can enter any "Class Notes", you can "Repeat Class" and "Copy to other class"
Step 5- click on the "Save" button at the bottom
You can see your Scheduled class in the Classroom, even you can Edit your class also.