If that snippet "Time Spent" would exist, you can automatically sent an e-mail to the person inside your organization with the "Total Time Spent", the moment an IT-engineer flags a ticket as resolved.
That person can immediately start with the invoice, instead of first logging on to Atera, generate a report or open the actual resolved ticket to find out what time the IT-engineer spent, solving the ticket.
This would save time for the person who needs to invoice all resolved tickets.