How to track how much time a user has spent on a ticket?

Greetings to all of you

I am trying to make my RT 4 to show me how much time had been spent on a
I need to see “timeworked” for open, stalled, acf tickets as well.

I installed the Activity Reports by Best Practical but it shows time
worked for resolved tickets only.
I need to see time worked for tickets in the other statuses.

Could anyone help me?

Thank you in advance!

Best regards
K. Haytova