Additional Viewports are created in the View menu in Layout with Add Viewport. A maximum of 28 additional viewports can be created. Additional viewports can contain anything that Layout can see including the Schematic view and VPR.
Once you have added several, arranging them becomes important. The Arrange dropdown contains three choices:
- Row - Arranges additional viewports in a row based on the selected viewport
- Column - Arranges additional viewports in a column based on the selected viewport
- Tile - Arranges viewports in a deck of windows