My requirement is when a user clicks to open a PowerPoint or Word document from a SharePoint document library. It should display all the business templates of my organization.
Whenever I create a document library those templates should reside inside the PowerPoint or Word document. It should be applicable on any sites created under that O365 SharePoint.
Example: Any SharePoint site → Document library → Click New → PowerPoint document should display my custom business template.
Note: If I add any new template or change an existing business template that too should be populated. Could you please assist me how to achieve it?