To work on a request, you associate file revisions to it. This adds information about affected files to the requests, and maintains a record of all changes made in response to the request.
Before you can work on a request, you must add it to your working list. This makes the request available to you when you are checking files out / in, or delivering local changes to the repository.
To work on a request:
Right-click the request and select Add to working list.
Now, when you add, check out, or check in files, you can relate this request to the files.