If you're asking how to remove the back cover panel:
1. Looking at the back of the monitor, you'll see two screws near each bottom corner. Remove those.
2. Inserting a thin tipped standard slotted screwdriver, pry between the back cover and front cover (bezel) gently.
3. Lift the screwdriver to pry the front bezel away from the monitor.
4. Continue around the edges until you can lift the back cover off the monitor.
note: be careful around the corners. Take your time.