You can try the following, if something that is pictured and described here is not visible on your screen:
Make sure that our app is installed
Perform the configurations described here: Score first-time-use instructions
Open your Board
Click on “Start conversation” and select the “Score” Tab
Click on “Settings” and select “Go to App Settings”
Select the “Override with predefined“ Tab
Now you can select one of our predefined templates or edit the current template How to edit the current Score template