It is a small drop-down icon located at the title bar ... Read this post if you want to enable or disable the search tabs button from the Google Chrome title bar. This feature is set as default ...

To turn off Copilot in Word, disable the feature via Settings, remove it from the ribbon, or downgrade the Microsoft Office ...

The Widgets menu icon will be removed from the taskbar and the turn on/off button will also be disabled in the Settings. To enable the Widgets feature again, just follow the above-mentioned steps ...