Este es el código
Private Sub CommandButton1_Click()
'Por.Dante Amor
Set h1 = Sheets("INGRESAR_CITA")
'Registrar cita
If CheckBox1 Then
h1.[D23] = CDate(Format(TextBox1, "HH:MM"))
h1.[D24] = CDate(Format(TextBox2, "HH:MM"))
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Else
'If Label1 = "" Then
' MsgBox "Falta el cliente", vbExclamation, "REGISTRAR CITA"
' Exit Sub
'End If
If Label2 = "" Then
MsgBox "Falta la fecha", vbExclamation, "REGISTRAR CITA"
Exit Sub
End If
If Label3 = "" Then
MsgBox "Selecciona un horario", vbExclamation, "REGISTRAR CITA"
Exit Sub
End If
'
'Set h2 = Sheets("Agenda")
'u = h2.Range("B" & Rows.Count).End(xlUp).Row + 1
'h2.Cells(u, "B") = h1.[D22]
'h2.Cells(u, "C") = CDate(Format(Label3, "HH:MM"))
'h2.Cells(u, "D") = "=C" & u & "+""00:" & ComboBox1 & """"
'h2.Cells(u, "D") = h2.Cells(u, "D").Value
'ActualizarHorarios
h1.[D23] = CDate(Format(Label3, "HH:MM"))
h1.[D24] = "=C" & u & "+""00:" & ComboBox1 & """"
Label3 = ""
ComboBox1 = ""
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End If
End Sub