Hi Stephen,

I’m not sure if my reply will help at all as I haven’t experienced exactly your 
situation.
But I often have to change recurring events.

How to change multiple events at once on calendar:

Did you set it for repeating? If you just set individual events and just 
created the same event on different days without some type of repeating, then 
you would not be able to change them all at the same time. 

If they are repeating, then you can open the next one in the future, you cannot 
use one of the past ones, and it should ask if you want to change all or just 
the one.

Sorry if my reply does not really relate to your situation.

Kind Regards,
Ronni

13-inch MacBook Air (April 2014)
1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
8GB 1600MHz LPDDR3 SDRAM
512GB PCIe-based Flash Storage

macOS High Sierra 10.13.6
> On 28 Aug 2019, at 12:49 pm, Stephen Chape <[email protected]> wrote:
> 
> Hi folks,
> 
> My son (who is a pilot living in Dubai) shares his iCloud Calendar (flight 
> roster) with me and my wife.
> This means we always know where in the world he is.
> 
> When we receive his Calendar updates on our iMacs we have to Click OK to each 
> update in order to install them.
> Often his updates can number 70 or more (one for each day) at a time because 
> his roster changes frequently.
> This is a very laborious task having to click OK to 70 or more daily changes 
> each time there is an update.
> 
> I cannot find a way on our iMacs to OK each batch of updates in Calendar, 
> rather each day individually.
> Although I did find a way to make all OKs automatic on our iPhones and iPad.
> 
> Any help with this would be greatly appreciated please 🥺
> 
> Regards,
> Stephen Chape
> 
> 
> 
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