Smart Routing is an add-on option with the Job Scheduler that enables you to automatically reorder your jobs for the day to minimise travel time and get your jobs done faster. To opt into Smart Routing select Power up from the top menu and a drawer will pop out on the right side of your screen. Select Smart Routing from the list.
Select Upgrade Now to enable Smart Routing for your account. If it's already enabled, then the button will be greyed out.