From your Dashboard, Select "Team Management".
On the Left select "Matches".
You can use the filter drop downs to narrow the list of games shown and when you've located the match being input, on the Right Click the three dots and then select "Match Stats".
Once the window pops up you will enter the score under the correct team or click "Choose File" and upload the game sheet. Here you can also click on any Color Card box and input the info.
Here is what that window will look like when choosing Yellow, Red, Injury, or Other.
Once all of the info is inputted, click "save"