Hi Juroeng. Welcome to the user community!
You can find the SmartBear support team here, but we can help too 🙂
Someone asked a similar question recently and you can see that post here - but to answer your question directly as it may be a bit different...
Go into your Story, click on the Zephyr Scale icon:
Scroll down into the Zephyr Scale area and access the menu bar, and choose "Add existing Test Case"
Then go into the top right-hand corner and select your project, and use the folders to find and add your test cases:
This will add the test cases from your selected projects and appear as Test Coverage for Zephyr Scale
Thank you for your reply. 😊
However, when I select other project (It's step 1 in below image), PROJECTS don't be changed other project.
