Access VBA Hide navigation pane where no form

Hi

I have a split access database where I use the following code on the main form load in the front end to hide the navigation pane. I want todo something similar in the backend but there is no form.
Where should I put my code?

    If InStr(N, "accde") > 0 Then
         'select the navigation pange
         Call DoCmd.NavigateTo("acNavigationCategoryObjectType")
         'hide the selected object
         Call DoCmd.RunCommand(acCmdWindowHide)
    End If