You can use Daily to find and add additional jobs to an existing route. This technique is a little more manual than BestFit or JobStacker, but depending on your goals this can be a quick and effective way to fill out your day, especially if you know the unscheduled jobs you want to add.
When you run a Daily in this way we will always include all of the unscheduled jobs that were selected into the target number of routes. So if you're trying to add "a lot" of jobs at once you'll probably want to use JobStacker.