Adding Communication Best Practices to Performance / Potential Handbook Page

Why is this change being made?

Hi @gl-peoplepartners and @cteskey! As part of the performance / potential project, we crafted some best practices with regards to communicating performance factors. This content should serve as a guide for managers as they communicate the results of the performance / potential matrix to their team members. Communicating of performance factors will start in mid-December after e group approval and compensation team audits and continue through the end of January.

We welcome any feedback or suggestions you may have before we merge this into the handbook. If you can review by next Wednesday, November 18th - that would be great.

Cc - @Josh_Zimmerman I know we also discussed potentially scheduling manager training mid-December to review this content live and answer questions. Would love your review of the content and your thoughts on if that is something we would want to get on calendars.

Thank you!

Author Checklist

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• Added a description to this MR explaining the reasons for the proposed change, per say-why-not-just-what
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