For that, you need to make a clone of the test case, for that you may use the following steps

1. Go the test case and right click on it.
2. Click on Create Copy and add to suite option in the list.
3. Make the change if you want (Here you can modify test case independently without affecting other).
4. Click on Save and Close.
5. Now drag and drop that test case to other suites.

For that, you need to create a clone of the test case, for that you may use the following steps

1. Go the test case and right click on it.
2. Click on Create Copy and add to suite option in the list.
3. Make the change if you want (Here you can modify test case independently without affecting other).
4. Click on Save and Close.
5. Now drag and drop that test case to other suites.