How can I see/check project hours added by resources?

You can see if time has been added to the project by running a report. 

• Go to the Analysis tab
• Click the Actual Hours report from the menu
• Under Include, check only Projects/Workspaces
• Under Include Project(s)/Workspaces(s) click the magnifying glass to search for your project
• Check the box next to your project
• Click Insert Checked. This will take you back to the report page.
• Confirm the dates in the Date From box are correct
• Click Run Report