1. From the management settings for the object that you want to edit, go to Page Layouts.
2. Click New.
3. Optionally, choose an existing page layout to clone.
4. Type a name for the new layout.
5. Optionally, select Feed-Based Layout to create a layout that includes separate tabs for a record’s feed and detail pages.
6. Click Save.
7. Modify the layout.
8. Assign the new layout to user profiles.