I have created a form which contains a CCK field "send sms" (checkbox) with two options:
Send sms between 9am to 10am (= option 1)
Or anytime (= option 2)
If the user selects option 1, then notification should send between time 9am to 10am to user.
If the user selects option 2, then notification should send at any time.
How to achieve this functionality?