Blaze,

There are a number of ways of going about this.  And I am not 100% clear
what "be placed on that record" means, but I assume this is a record ID
numberr of some sort.  So, I'll have a go.  Let's use an Input Box to
get the number from the user.  So, on the Click event of the button on
your switchboard form, you could put a VBA procedure something like this...

 ' create a variable for the number
 Dim KeyNumber As Long
 ' open an input box for the entry of the required number
 KeyNumber = InputBox("What is the number?")
 ' see if there is already a record in the table with this number
 If DCount("*","YourTable","[YourID]=" & KeyNumber) > 0 Then
    ' if so, open the form at that record
    DoCmd.OpenForm "YourDataForm", , , "[YourID]=" & KeyNumber
 Else
    ' if not, ask with a message box about adding a new record
    If MsgBox("Add new?", vbQuestion + vbYesNo) = vbYes Then
       ' if so, open the form at a new record
       DoCmd.OpenForm "YourDataForm", , , , acFormAdd
       ' ... and insert the number into the new record
       Forms!YourDataForm!YourID = KeyNumber
    End If
 End If

Hope that makes sense.  You will, of course, need to replace the actual
names of your own form and table and field into the above example.