Hi @john john Pter,
Thanks for reaching out to us. We are very pleased to assist you.
By design, Shared columns are read-only for the documents within the Document Set, and they can be edited only for the Document Set itself.
Please follow the steps below to hide shared columns in the Properties panel:
1. Select a file > More > Properties.
2.Click on the button in the Properties panel and select Edit Columns.
3. Uncheck the Shared columns. This change affects the Properties panel for all documents which content type is D.
If you have any questions, please do not hesitate to contact me.
Moreover, if the issue can be fixed successfully, please click "Accept Answer" so that we can better archive the case and the other community members who are suffering the same issue can benefit from it.
Your kind contribution is much appreciated.