Reoccurring & Individual Events in Outlook Calendar

I have numerous different groups that reoccur every week, same time.  I have input all off them on our shared Outlook calendar.

However, here is an email I received from my boss, asking to make them all individual instead, with reasons why:

Why I asked for individual groups is because I use the coverage calendar to track how I covered things and justify FTE during budget time. If groups are entered as reoccurring, any changes to the reoccurring appointment auto changes all meetings in the calendar erasing everything that was done throughout the year.  Also, when listed as reoccurring, any change of color, changes the entire series which is not helpful in quickly identifying GAPS and increases the chances of uncovered groups going unnoticed.

Does anyone have any suggestions on how I can do this without creating an individual event all the time?

Thanks in advance!