public static void PlaceAlignedViewsAtLeftCorner(Document doc)
{
    FilteredElementCollector fec = new FilteredElementCollector(doc);
    fec.OfClass(typeof(ViewPlan));
    var viewPlans = fec.Cast<ViewPlan>().Where<ViewPlan>(vp => !vp.IsTemplate && vp.ViewType == ViewType.CeilingPlan);

    ViewPlan vp1 = viewPlans.ElementAt(0);
    ViewPlan vp2 = viewPlans.ElementAt(1);

    using (Transaction t = new Transaction(doc, "Place on sheet"))
    {
        t.Start();

        // Add two viewports distinct from one another
        ViewSheet vs = ViewSheet.Create(doc, ElementId.InvalidElementId);
        Viewport viewport1 = Viewport.Create(doc, vs.Id, vp1.Id, new XYZ(0, 0, 0));
        Viewport viewport2 = Viewport.Create(doc, vs.Id, vp2.Id, new XYZ(0, 5, 0));

        doc.Regenerate();

        // Calculate the necessary move vector to align the lower left corner
        Outline outline1 = viewport1.GetBoxOutline();
        Outline outline2 = viewport2.GetBoxOutline();
        XYZ boxCenter = viewport2.GetBoxCenter();
        XYZ vectorToCenter = boxCenter - outline2.MinimumPoint;
        XYZ newCenter = outline1.MinimumPoint + vectorToCenter;

        // Move the viewport to the new location
        viewport2.SetBoxCenter(newCenter);

        t.Commit();
    }
}