How to start a practice group?
Click on "Practice" on your profile
Click on "Start Practice Group"
Select the language, level and number of participants and click "Submit"
Click on "Start a Hangout"
Click on "Join"
"Click Close" or "Add your friends and Click Invite"
Wait for your friends and other users to join the group
Click on chat addon on the top left corner to group chat
Enter your messages on the bottom right corner
Click on Leave call icon on top right to leave the call