You have the space to configure default service items for worklogs and auto-start timers to record worklogs more accurately. Here’s how:
Navigate to Settings > Contracts and Billing > Time Tracking
Choose a default service item to be shown on the timer tab.
The auto-start timer works when the ticket is opened for the first time a ticket is assigned to a technician. For example, If a ticket is reassigned to another technician and they open it for the first time, then the auto-start timer won't start running.