Combine VBA Codes to Hide Multiple Rows

I'd like to combine two codes which hide rows.

Private Sub Worksheet_SelectionChange(ByVal Target As Range)Sheets("Re-Hire Questionnaire").Protect Password:="Testing2022!", UserInterFaceOnly:=TrueIf Range("B12").Value = False Then    Rows("9:11").EntireRow.Hidden = TrueElse    Rows("9:11").EntireRow.Hidden = FalseEnd IfEnd Sub

Private Sub Worksheet_SelectionChange(ByVal Target As Range)Sheets("Re-Hire Questionnaire").Protect Password:="Testing2022!", UserInterFaceOnly:=TrueIf Range("B19").Value = False Then    Rows("16:16").EntireRow.Hidden = TrueElse    Rows("16:16").EntireRow.Hidden = FalseEnd IfEnd Sub

Tried to place them underneath each other.