Update: Document Sets in Modern Document Libraries

Hi Roland - You'll need to edit the Welcome Page by generally following these steps: 1) Within a specific Document Set's settings, click the link to "Customize the Welcome Page" 2) Click the Page ribbon at the top of the next webform, then click the "Edit Page" within that ribbon 3) Delete all web parts in zones 1-4 (to confirm all custom Web Parts have been removed) 4a) Add Image Viewer to zone 1 by clicking "Add a Web Part" within the Zone 1 box (click "Add a Web Part", then the "Media and Content" category, then the "Image Viewer" part, then press the "Add" button to add it to the selected Web Part ) 4b) Add Document Set Properties to zone 2 (under the "Document Sets" category) 4c) Add Document Set Contents to zone 3 (under the "Document Sets" category) 4d) Keep zone 4 empty 5) Click the "Stop Editing" button back on the Page ribbon to confirm the updates. I've asked Lincoln and Co to consider adding a button in the future that reverts the Welcome Page back to this default to save these steps, which you'll need to perform for each Document Set content type for each library previously using the classic view.