If you use one of the latest Windows 11 preview builds and you cannot find the "Show seconds" option for the tray clock, that is because Microsoft quietly moved it to a new place in the Settings app.
Your April article (“Optimize Windows 11 With These 8 Settings Tweaks“) had good tips for adjusting the Start menu and ...
Windows 11's taskbar has plenty of unused real estate. This new app fixes that by letting you drop custom widgets right onto the taskbar.