On your access form make sure that your combobox has a name. You do this by
opening the form in design mode, then double-click on the combobox (or right
click and select properties) to open properties. Select "Other" and give the
combobox a name, for instance "cboEmploees".

Then, still within properties, go to "events" and select (double click)
"after update" event. This will open the visual basic editor and insert an
empty procedure Private Sub cboEmployees_AfterUpdate() This will ensure that
you have created a procedure that is triggered by your combobox. To test it,
you can write a line of code within the procedure:

Private Sub cboEmployees_AfterUpdate()

Msgbox("Procedure runs ok")

End sub

If the msgbox is displayed when your select something from your combobox
then the procedure runs ok.

To add some of the logic you request you can substitute the msgbox line with
the following:

If isnull(Me.cboEmployees.column(0)) Then

Me.cmdIndividualEmployeeData.enabled = False

Me.cmdIndividualEmployeePercent.enabled = False

Else

Me.cmdIndividualEmployeeData.enabled = True

Me.cmdIndividualEmployeePercent.enabled = True

End if

I don't know if your combobox has more than one column. Column(0),
Column(1), Column(2) etc selects the actual columns of your combobox.

Regards

Tore

You will need to put code in two places.  To ensure they are disabled for
each record, you will need to disable them in the form Current event.

   With Me
       .cmdIndividualEmployeeData.Enabled = False
       .cmdIndividualEmployeePercent = False
   End With

Then to turn them on use the AfterUpdate event of the Combo box

   With Me
       .cmdIndividualEmployeeData.Enabled = True
       .cmdIndividualEmployeePercent = True
   End With