A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
You could place a command button (Form Control) on the worksheet, and assign the following macro to the command button:
Sub CheckCells()
Dim c
Dim m
Dim i As Long
c = Array("A2", "A4", "A6", "C2", "C4", "C6", "E2", "E4", "E6", "G2", "G4")
m = Array("Message for A2", "Message for A4", "Message for A6", _
"Message for B2", "Message for B4", "Message for B6", _
"Message for C2", "Message for C4", "Message for C6", _
"Message for G2", "Message for G4")
For i = LBound(c) To UBound(c)
If Range(c(i)).Value = "" Then
Range(c(i)).Select
MsgBox m(i), vbInformation
Exit Sub
End If
Next i
MsgBox "All checks have been passed!", vbInformation
End Sub
Modify the two arrays as needed.