Yes, I am using for other content type in the document library EditForm.aspx works great for all content type in the library except document set content types. I was planning on creating custom docsetnew.aspx for the document set (I saw your
suggestion not to change docsetnew.aspx under _layout folder). Not sure what form need to change? does this feature works or not. I just want you to know I am not a developer, I am sorry if my terminology is not right.
Thanks for your help and response.