Hi

I am not sure if I understood the question correctly. Can you please share some screenshot etc which can help us understand the exact challange you are facing.

Thank you

Hi, this seems POC phase, so no effective screen shot to share with.

The user will try to open multiple popup windows by local action on the perform harness.

But Data page only active for the lastest window opened. The user wants to use multiple windows at the same moment.

For that, is there any good way to satisfy end user's requirement? 

Hi

I think, you can try doing Show-Harness and open multiple harness . Thats one way you can achive this requirement. 

Other could be using JS function Open URL in window. Try them and let me know the outcome.