Enabling manual calculation on one specific workbook but all other open worbooks remain on

Guys I have a problem with a VBA code I wrote. The problem is that I want a specific workbook to be always on manual but when I open other workbooks I want them to remain on automatic even though the first workbook is set on manual through vba code. Is that possible to be done?
This is the code I run:

Private Sub Workbook_Activate()
With Application
.Calculation = xlManual
.MaxChange = 0.001
.CalculateBeforeSave = False
End With
End Sub

Private Sub Workbook_Deactivate()
With Application
.Calculation = xlAutomatic
.MaxChange = 0.001
.CalculateBeforeSave = False
End With
End Sub

Private Sub Workbook_Before_Open()
With Application
.Application.Calculation = xlCalculationManual
.MaxChange = 0.001
End With
End Sub

Private Sub Workbook_BeforeClose(Cancel As Boolean)
With Application
.Application.Calculation = xlCalculationManual
.CalculateBeforeSave = False
.CalculateBeforeClose = False
.MaxChange = 0.001
End With
End Sub

I kmow that Application.Calculation refers to all open workbooks but I don't know the code to specify the manual calculation to this workbook only while others are open. Could you help me on this??Thnx

Originally Posted by Richard Buttrey

Application.Calculation is as it says an application level setting. You can't mix and match and have different workbooks in the same application where some are in manual calculation mode and others in automatic mode.

All you can do is open another instance of excel as a second application.

When you say open another instance of excel as a second application what do you mean exactly?

Is there a setting that will make excel workbooks to open in a different excel.exe?

Basically I want some formulas not to calculate on their own on some specific cells but I couldn't find a way to do it. If I upload the excel file could you please imput a vba code that allows you to manually calculate on some cells only by pressing a hotkey?