... During the evaluation session, you will record the start time of the task and the end time. You then subtract the start time from the end time to calculate the time spent on the task by the participant. ... situation, then think of testing the nav bar, not just the new link to the homepage. The best way to start the process is by meeting with the development staff (at least the product manager, the ... situation they may have found themselves in that your product could address. Then, when the times comes for a task, ask them to try to use the product as if they were trying to resolve the situation...