Just lock the entire subform at once on the main form. Don't need to go in and lock them individually.

How would I go about doing that?

From the parent form just say:

SubformName.Locked = TRUE

So let's say you wanted to LOCK or UNLOCK the ContactF (which is a subform on CustomerF) depending on the status of the IsActive field, you would say this in the OnCurrent event:

Private Sub Form_Current()
    If IsActive Then
        ContactF.Locked = False
    Else
        ContactF.Locked = True
    End If
End Sub

It's that easy. Don't forget the same code in the AfterUpdate event for the IsActive field itself.

Thank you so much for the reply. would be okay with locking the whole subform at first but how would I go about unlocking specific fields within the subform based on GroupID? I apologize if I am missing something.

Same thing, just a little more complicated.

ContactF.Form!FieldName.Locked = TRUE

Thank you so much for your help I really appreciate it. I'm getting an error and I was wondering if you can help he figure out were I'm going wrong

Private Sub Form_Current()
DIM ctl As Control

If ISUserInGroup(1) Then
Else
For Each ctl In Me

If ctl.ControlType = acTextBox or ctl.ControlType = acComboBox Then
ctl.Locked = True
End If

Next
For Each clt in Forms!MainForm.MySubform.Form!
If ctl.ControlType = acTextBox or ctl.ControlType = acComboBox Then
ctl.Locked = True
End If

Next
End If

If IsUserInGroup(2) Then
FieldName.Locked = False
Forms!MainForm.MySubform!FieldName.Locked = False

End If

End Sub

Few things, maybe just my preference, but I like to just say 'do nothing if it's no code, easier to read.

If ISUserInGroup(1) Then
'do nothing
Else
For Each ctl In Me

This part has a spelling error, clt instead of ctl
For Each clt in Forms!MainForm.MySubform.Form!

These arent actually "FieldName" right? They're your real field names. Like ContactName.Locked = False etc, or do you have a field called fieldname?
If IsUserInGroup(2) Then
FieldName.Locked = False
Forms!MainForm.MySubform!FieldName.Locked = False