What is the best way of handling the Risks and Issues in ClearQuest?

I understand that I can categorize the Change requests as Corrective, Adaptive- Business, Adaptive - Technical and Perfective. I wanted to know what category is
best suited for handling Risks and Issues or if there is any other way of handling them on a project.

I would appreciate any help I can get from someone who is using ClearQuest for Tracking Risks and Issues on the project.