You've done all the preparation, found a good location, and confirmed the date and time with the employee. Now it's time to have the conversation.
Scheduling the meeting
There's an old saying that "timing is everything." If, on the day of the meeting, something goes terribly wrong at work, and it doesn't even have anything to do with this meeting (for example, a big problem in the operation or a major customer issue), don't hold the meeting. Reschedule it for another time. After all the work you've put into the meeting, don't allow external factors to distract you from the conversation.