Create a bug against a requirement

In the requirement's right side vertical menu, click the bug icon in the vertical menu. Click the New/Link button and select + New Bug. Enter a title for the bug and click Save. Click on the bug ID to open up it's details to edit.

Users will need to have project permissions to view and edit in both Requirements and Bugs to perform this action. Depending on the settings of the user's project permissions, they may be able to view all the project requirements and project bugs, or just a subset of each. Users added to a specific requirement as a contributor or reviewer, and users added to a specific bug as a watcher will be able to view them.