Hi @De Winter Koen (DGA),
According to my research and testing, unfortunately, it is by design. When I populate a Word document with Quick Parts, it can only display one person. Per my research, there is currently no workaround to display all values.
And I highly recommend that you create a feedback on this issue. Many features of our current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future. Thanks for your understanding.
FeedBack: [https://feedbackportal.microsoft.com/feedback/
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