Navigating back to a prior-to-last Activity

Sorry if this is a simplistic navigation question, but here goes: I have an application with, say, four or five Activity's, with Activity 1 being the Main Activity (Act), and the application has a navigation menu, too. The Activity_Create looks is basic like this:

Code:

  Sub Activity_Create(FirstTime As Boolean)
If FirstTime Then
    PopulateLayout 'populates the child views onto the layout
  End If
End Sub  

Here are the navigation steps:
1) From Main (Act 1), click on something...

Navigating back to a prior-to-last Activity

from B4X Community - Android, iOS, desktop, server and IoT programming tools http://ift.tt/2blX1fq
via IFTTT