Requirements are recorded in the Requirements module by creating a requirements tree. The requirements tree is a graphical representation of your requirements specification, displaying the hierarchical relationship between different requirements. The tree includes different groups of requirements based either on requirement type or functional area.
For each requirement group, you create a list of detailed requirements in the requirements tree. Each requirement in the tree is described in detail and can include any relevant links and attachments.
After creating a requirements tree, the requirements can be used as a basis for defining tests in your test plan tree.
For task details, see How to Create Requirements.