You can modify the entry / exit delay to suit your needs.
Entry Delay
No Entry Delay – *#→password→50→Func Key
15 Seconds – *#→password→51→Func Key
30 Seconds – *#→password→52→Func Key
45 Seconds – *#→password→53→Func Key
Exit Delay
No Exit Delay – *#→password→60→Func Key
30 Seconds – *#→password→61→Func Key
60 Seconds – *#→password→62→Func Key
90 Seconds – *#→password→63→Func Key
120 Seconds – *#→password→64→Func Key