When using categories you sometimes want to check on a few specific categories to see what the status of those jobs are. Below you can see a search page with 4 jobs on it and we only want to see those with Ready for Delivery/Pickup.
To do so just open up your search tools and select the categories you would like to see, to select multiple you can either click and drag or hold Ctrl + Click. Once you have your search setting ready make sure to click Apply.

Once you are using a filter you'll notice the button indicates that search filters are applied, to remove the filter open the tools panel again and click Reset.