A quick guide showing you how to enable the Playstation buttons if you are using a DS4 controller.
Playstation Button Indication Guide for DS4 Controller PC
Step 1: Enter large image mode
You do this by clicking the rectangular frame in the top right corner of your Steam client.
Step 2: Click on Configuration
The gear, third icon.
Step 3: Click Controller Configuration
Step 4: Launch “PlayStation Configuration Support”
Describing “Xbox Configuration Support” is optional, now that you discover that it doesn’t matter if you’re using a DS4 controller.
Step 5: done
Now the instructions for the PlayStation buttons should appear in your game.