Default VBA Userform - Hide This Workbook/Application

https://www.mrexcel.com/forum/excel-questions/561770-hide-excel-only-show-userform.html

Private Sub UserForm_Initialize()
Application.Visible = False
End Sub

Private Sub UserForm_Terminate()
Application.Visible = True
End Sub

https://www.mrexcel.com/forum/excel-questions/899439-vba-userform-hide-workbook-application-but-nothing-else.html

Private Sub Workbook_Open()
ThisWorkbook.Windows(1).Visible = False
If Workbooks.Count = 1 Then
Application.Visible = false
End If
 ufrmCasesToMandate.Show
Application.Visible = True
 End Sub