Access Detail :
- User should have access to Project/Domain in which he/she wants to create Test case.
- The User's Role should have access to "Create" Test case..
Using "Create Test Case from Requirement" option from Requirement Detail screen :
Go to Requirement Module.
Open Requirement from which Test Case need to be created (Open at level(Domain / Release / Cycle) as required).
Go to Test Case section >> Click on down arrow >> "Create Test case from Requirement".
Fill all mandatory fields and click on "Save" button.
A new Test case will get created at selected level (Domain/Release/Cycle).