As User, I want to be able to manage a Non-Functional Requirements (NFR) in GreenHopper agile board:

• NFRs define a qualities of a product, which is not a behavioral requirements (User Stories)
• One NFR can be referred by several User Stories. It means, that each User Story must conform (or is constrained by) NFR's terms
• One User Story may refer to several NFRs. It means, that this User Story must conform (or is constrained by) all terms of all NFRs
• NFRs must not be in backlog
• NFRs must not have Assignee and Resolution fields. (I'm not sure, maybe some else fields). Instead they must have a validity period of time. This period defines, which Releases or Issues is affected by NFR's terms in some time interval.
• There should be a UI zone on the GreenHopper agile board to manage NFRs. As an example - Epics panel. Something congenial.
• There should be a list of NFRs for each User Story in Issue Detail View on the right side of agile board, well recognizable by a User. It must draw his (her) attention: "There are some requirements beside User Story description".
• There should be an ability in Issue Detail View:
  • To access NFR's details
  • To remove NFR
  • To add new NFR
• There should be an ability to view all User Stories referring to specific NFR

Also, please refer to this support discussion GHS-7315