How can I add a filter to the side menu?

To add a filter to the side menu, click on Reporting.

Now click the filter button. Alternatively, you can first select a filter to the left of the button and then click the filter button.

Now select the filter group you want to add to the page view. To do this, click the drop-down menu next to Select Filter Group.

Now select the filter of your choice (or create a new one).

Click the Add to the side menu checkbox.

Confirm your changes by clicking Save.