The Irrelevant Start Time II

This blog is written mostly tongue in cheek. Some points may be informative. Please provide your feedback.
If you suffer from self-irrelevancy, please seek professional advice.

Hello. How can a start time become relevant for a meeting or appointment? There has to be an incentive for all attendees to begin on time.
In yesterday's example, where the 5th person determines start time relevancy, there has to be a reason that 5th person will attend the meeting ahead of other things. Believe it or not, one reason may be food and/or drink. If the people know there will be food (and better yet, if they know it may run out if they don't arrive on time), they'll be there, especially if the meeting is scheduled to run until around lunch time.
Another way is if the meeting scheduler realizes the 5th person is irrelevant to the meeting. If so, that person can be excluded from future meetings, which may help the start time.
Are there any other ways to make start times relevant? More tomorrow.

Regards,
Irrelevant