The taskbar filter allows you to hide certain types of operations from the taskbar:
It is located at the left bottom of the console.
Click on the Task Filter button. It will open the Task Filter window.
E.g. Supose you want to see all kind of task in the taskbar except for the power on/off/reboot type.
Open the taskbar filter and select the Hide Power On/Off tasks.
In the example, you will not see any task on the taskbar. Also, you will see that the icon of the taskbar filter has a check symbol on it to indicate that one or more types of tasks are filtered.