As a Referee - How to Start a Post-Game Report
Once the game has been completed, referees can create a post-match report
Step 1: Click the green "+" icon in the bottom right corner of the game feed screen

Step 2: Click on "Goal- & event reporting"
Step 3: Click on "Post game event report"
Step 4: Enter number of periods and period length, then click "Start Live Goal and Event Reporting"
You can also report that the game went to overtime or penalties before starting the report

CLICK HERE for instructions on how to report a goal
CLICK HERE for instructions on how to report a red or yellow card