Macro to show most recently used cell - excel

Question

I have a working macro that hides/unhides specific columns based off specific values in Column B. I also want to add another trigger that takes the user to the most recently used row. Below is my attempt.
Private Sub Worksheet_Change(ByVal Target As Range)
If Not Intersect(Target, Range("B:B")) Is Nothing Then
On Error GoTo safe_exit
Application.EnableEvents = False
Dim t As Range
For Each t In Intersect(Target, Range("B:B"))
Select Case (t.Value)
Case "A"
Columns("B:BP").EntireColumn.Hidden = False
Columns("H:BL").EntireColumn.Hidden = True
Case "B"
Columns("B:BP").EntireColumn.Hidden = False
Columns("F:G").EntireColumn.Hidden = True
Columns("P:BP").EntireColumn.Hidden = True
End Select
Next t
End If
safe_exit:
Application.EnableEvents = True
'Go to last cell in column B
With ActiveSheet
Range("B5").Select
Selection.End(xlDown).Select
End With
End Sub

Answer 1

Perhaps I misread your question from the other answer - and if so, I will be more than happy to delete this one.
You can simply add a variable that will track this for you and persist as long as you keep Excel open.
Private lastUsedRng As Range
Private Sub Worksheet_Change(ByVal Target As Range)
Set lastUsedRng = Target
. . .
...that takes the user to the most recently used row
You can accomplish this with
lastUsedRng.Select

Answer 2

Use Select as little as possible, and replace the last section starting with 'Go to last cell in column B with something like this, except moving it inside the If...End If.
With Me
.Cells(.Rows.Count, 2).End(xlUp).Select
End With