Is there a sequence to using them?
A beginner's confusion: What is the difference between an issue-tree and a framework? Can they be used interchangeably?
In consulting these terms are often use interchangebly. In case prep a framework is a general structure (e.g. profit framework consists of revenue and costs, costs is split in fixed and variable..). Where a issue true is often a customized framework for a specific problem/case.
In the beginning of your case prep some people start with general frameworks, however I always recommend to use your business logic to come up with a specific issue tree for each case.