2016 Office 365 for Business Sharepoint Calendar "Add Person" issue

When attempting to create a calendar in a 4-member group site by adding the app and choosing "Use this calendar to share member's schedule", I'm not able to add a person and have it retain that person's information once I exit the calendar.  

MS Tech Support has been able to recreate the issue but no fix provided to this point.

My end game is to create a site calendar with our sales team's work schedule and meeting schedule.  Any help would be appreciated.  Thank you!