Autofit columns in a range of cells without affecting other columns

Question

I am working on a project where I use the Aspose.Cells tool. I am inserting information from C#, this information is generated as a table but in reality I do it by means of cells, for which I bring a height and width of columns and rows, so when I upload my original file, all the columns are moved, this is what I don't want to happen so that my original file doesn't lose its format

the following is how I paint my rows and columns

cells[fila, ultimacolumna].Value = item.TipoAprovador;
Aspose.Cells.Style style2 = cells[fila, ultimacolumna].GetStyle();
style2.Font.IsBold = true;
style2.HorizontalAlignment = TextAlignmentType.Center;
style2.VerticalAlignment = TextAlignmentType.Center;
style2.Font.Size = 13;
style2.IsTextWrapped = true;
style2.Borders[Aspose.Cells.BorderType.TopBorder].LineStyle = CellBorderType.Medium;
style2.Borders[Aspose.Cells.BorderType.TopBorder].Color = Color.Black;
style2.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = CellBorderType.Medium;
style2.Borders[Aspose.Cells.BorderType.LeftBorder].Color = Color.Black;
style2.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = CellBorderType.Medium;
style2.Borders[Aspose.Cells.BorderType.RightBorder].Color = Color.Black;
cells[fila, ultimacolumna].SetStyle(style2);
cells.SetRowHeight(fila, 60);
cells.SetColumnWidth(ultimacolumna, 50);

//Firma
if (respTipoDocumento.FirmaAutUserName == 1)
{
    MemoryStream stream = new MemoryStream(FirmaResized);

    int pictureIndex = worksheet.Pictures.Add(fila + 1, ultimacolumna, stream);
    Aspose.Cells.Drawing.Shape pic = worksheet.Pictures[pictureIndex];
    pic.Left = 110;
    pic.Top = 20;

    Aspose.Cells.Style style5 = cells[fila + 1, ultimacolumna].GetStyle();
    style5.Font.IsBold = true;
    style5.HorizontalAlignment = TextAlignmentType.Center;
    style5.VerticalAlignment = TextAlignmentType.Center;
    style5.Font.Size = 13;
    style5.IsTextWrapped = true;
    style5.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = CellBorderType.Medium;
    style5.Borders[Aspose.Cells.BorderType.LeftBorder].Color = Color.Black;
    style5.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = CellBorderType.Medium;
    style5.Borders[Aspose.Cells.BorderType.RightBorder].Color = Color.Black;
    cells[fila + 1, ultimacolumna].SetStyle(style5);

    cells.SetRowHeight(fila + 1, 90);
    cells.SetColumnWidth(ultimacolumna, 50);
}
if (respTipoDocumento.FirmaAutUserName == 2)
{
    cells[fila + 1, ultimacolumna].Value = item.Username;

    Aspose.Cells.Style style5 = cells[fila + 1, ultimacolumna].GetStyle();
    style5.Font.IsBold = true;
    style5.HorizontalAlignment = TextAlignmentType.Center;
    style5.VerticalAlignment = TextAlignmentType.Center;
    style5.Font.Size = 13;
    style5.IsTextWrapped = true;
    style5.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = CellBorderType.Medium;
    style5.Borders[Aspose.Cells.BorderType.LeftBorder].Color = Color.Black;
    style5.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = CellBorderType.Medium;
    style5.Borders[Aspose.Cells.BorderType.RightBorder].Color = Color.Black;
    cells[fila + 1, ultimacolumna].SetStyle(style5);


    cells.SetRowHeight(fila + 1, 60);
    cells.SetColumnWidth(ultimacolumna, 50);
}
if (respTipoDocumento.FirmaAutUserName == 3)
{
    byte[] imgQR = GenerarQR((int)DocumentoOriginal.SolicitudId, (int)item.UsuarioId, item.TipoAprovadorId);
    MemoryStream stream = new MemoryStream(imgQR);
    int pictureIndex = worksheet.Pictures.Add(fila + 1, ultimacolumna, stream);
    Aspose.Cells.Drawing.Shape pic = worksheet.Pictures[pictureIndex];
    pic.Left = 110;
    pic.Top = 20;

    Aspose.Cells.Style style5 = cells[fila + 1, ultimacolumna].GetStyle();
    style5.Font.IsBold = true;
    style5.HorizontalAlignment = TextAlignmentType.Center;
    style5.VerticalAlignment = TextAlignmentType.Center;
    style5.Font.Size = 13;
    style5.IsTextWrapped = true;
    style5.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = CellBorderType.Medium;
    style5.Borders[Aspose.Cells.BorderType.LeftBorder].Color = Color.Black;
    style5.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = CellBorderType.Medium;
    style5.Borders[Aspose.Cells.BorderType.RightBorder].Color = Color.Black;
    cells[fila + 1, ultimacolumna].SetStyle(style5);


    cells.SetRowHeight(fila + 1, 90);
    cells.SetColumnWidth(ultimacolumna, 50);
}



cells[fila + 2, ultimacolumna].Value = item.NombreCompleto;
Aspose.Cells.Style style3 = cells[fila + 2, ultimacolumna].GetStyle();
style3.Font.IsBold = true;
style3.HorizontalAlignment = TextAlignmentType.Center;
style3.VerticalAlignment = TextAlignmentType.Center;
style3.Font.Size = 13;
style3.IsTextWrapped = true;
style3.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = CellBorderType.Medium;
style3.Borders[Aspose.Cells.BorderType.LeftBorder].Color = Color.Black;
style3.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = CellBorderType.Medium;
style3.Borders[Aspose.Cells.BorderType.RightBorder].Color = Color.Black;
cells[fila + 2, ultimacolumna].SetStyle(style3);
cells.SetRowHeight(fila + 2, 60);
cells.SetColumnWidth(ultimacolumna, 50);

//Puesto
cells[fila + 3, ultimacolumna].Value = item.Puesto;
Aspose.Cells.Style style4 = cells[fila + 3, ultimacolumna].GetStyle();
style4.Font.IsBold = true;
style4.HorizontalAlignment = TextAlignmentType.Center;
style4.VerticalAlignment = TextAlignmentType.Center;
style4.Font.Size = 13;
style4.IsTextWrapped = true;
style4.Borders[Aspose.Cells.BorderType.LeftBorder].LineStyle = CellBorderType.Medium;
style4.Borders[Aspose.Cells.BorderType.LeftBorder].Color = Color.Black;
style4.Borders[Aspose.Cells.BorderType.RightBorder].LineStyle = CellBorderType.Medium;
style4.Borders[Aspose.Cells.BorderType.RightBorder].Color = Color.Black;
style4.Borders[Aspose.Cells.BorderType.BottomBorder].LineStyle = CellBorderType.Medium;
style4.Borders[Aspose.Cells.BorderType.BottomBorder].Color = Color.Black;
cells[fila + 3, ultimacolumna].SetStyle(style4);
cells.SetRowHeight(fila + 3, 60);
cells.SetColumnWidth(ultimacolumna, 50);

ultimacolumna = ultimacolumna + 1;

so I need an idea of ​​how to do so that the columns in the original format do not move

it is expected to be as follows