add Pac Man rule for networking at conferences

[reshamas]

https://twitter.com/dylanbeattie/status/1111619036809449472

[speco29]

I can add the Pac man rule, but I need to confirm whether i should add a decent file explaining how the rule works or a working model?
can you help me out to understand it better?

[danielskatz]

This is a good idea to add. I'm also unsure of how best to add it.

[rivaquiroga]

Here is the original post, so we can add the citation: https://www.ericholscher.com/blog/2017/aug/2/pacman-rule-conferences/

[aterrel]

This seems to be a good case for adding a chapter on writing participant codes of conduct for an event. Similar to #255

We might consider a new chapter on this rather than pushing it into the current chapter structure.