Change scale for time spent

Change scale for time spent

Is there a way to change the format of the time spent field from hours to minutes? 

When creating a report with Average or Sum of 'Time Spent by Hours' we notice that Technicians who enter time of less than 1 hour in the Worklog appear in the report as working '0' hours. 

For example: Technician A closes 4 tickets with 15 minutes spent per ticket. The report shows their time spent as 0 hours instead of a sum of 1 hour. Same result for Average time spent -- appears as '0' instead of 0.25 hours. 

Technician B closes 1 ticket with 1 hour set in the Worklog and appears correctly in the report.