Virtual events hb updates - 20200526 to 20200527 -V1.7

Why is this change being made?

Virtual events handbook updates happening on 2020-05-26 to 2020-05-27 for Marketing Agility project: Virtual event excellence.

List of changes (Please list high-level changes here so we can quickly know what changed in this MR):

• [Operations] More clarity on calendaring for 3rd party events (sponsored) @zbadgley

Author Checklist

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