There are multiple ways to see your volunteer's hours as an organizer. If you have milestones set, you can view your volunteers' progress by clicking on the Milestone Summary from your Organizer Dashboard. This is the easiest way to quickly assess if volunteers are on track to reach their goals!
If you want to check hours for a specific volunteer, you can access the Volunteers tab from your Organizer Dashboard and select the volunteer from the list to see their timesheet.
If you want to export data, you can go to your Report page, then advanced settings, and run a report for recent activity. You can include all volunteers or filter the report for specific volunteers.
If you have a premium or advanced plan, you have the option to enable "Approve hours upon submission" and you can monitor hours as they are submitted and determine if you want to accept or reject them.