To access the Filters panel, click on the icon on the toolbar.
Simply drag and drop the feature you want to filter to the Input Features field.
Categories are filtered out by unchecking the box next to the name of the category; to filter numerical features, you can change the range by using the slider or typing in the input field underneath. Then, click on the Apply button to apply the changes and the points filtered out will be hidden in the current plot.
To reset the filter, you can simply click on the icon at the top right to reset visibility of all points.