In the hamburger menu of your widget you will find a menu option called Filter cards. This feature gives you the possibility to build your own filters for a specific widget (it's also accessible by using the keyboard shourtcut F when hoovering over a widget).
When enabled a query field will appear on your widget. You can then choose which criteria you want to apply to your filter.
You can also save your filter so that it can be re-used later on.
When saving it you will have the option to share the filter with everyone in your organization or you can pick a specific group of people.
The filter will be stored in your Saved filters.