Organize Tests to multiple Tester

[bck]

Hello together,
since a few days i'm testing TestLink 1.9 (Beta 5). I'm very excited with this tool. The only missing thing in my eyes is the handling between Testers and Test Cases. On the first view I can't see how many Testers execute one or more Test Cases. Unfortunately I do not even know who performs what Test Case.

For Example: Test Case - Installation - should be executed by 3 Testers. If I did not write down who is executing a Test Case, it can happen that I do not know that after a certain time.
Is there a feature / option to see, which Tester execute which Test Case? Perhaps in a graphical way or something like that?

Please excuse my english, it's not the best, but i hope you understand my question.

Greetings