After writing the uConsole_CM4_v1.3g_64bit.img.7z image to a microSD card and completing the initial update, I noticed that the power management option was missing (maybe it wasn’t there from the start?). So here’s how to fix that.
● Adding Power Management to the Menu
Click the Raspberry icon in the top-left corner to open the menu → go to “Preferences” → select “Add/Remove Software” → once the package manager opens, type “xfce” or “power” into the search bar at the top-left → from the search results on the right, find and check the box for “Power Manager for the Xfce Desktop” → click the [OK] button.
That should enable power management functionality.