You can point BrightWork Reporter at a specific report file by selecting Custom Location when configuring BrightWork Reporter and providing the server relative URL (for example, /sites/mysite/BrightWork%20Reporter%20Library/issuesbystatus.xml).
This can be useful if you want to use one site collection's report in multiple site collections.
Note: You should ensure that all users who are viewing the report have access to the location the report file is stored in - otherwise they will see an Access is Denied error message.