Every detail that wasn't in the first description or was not clearly described will require ordering additional gigs or a custom order.
Feel free to contact me. If you have a complex task or don't know what solution you need in the particular case I can consult for 1 gig. I have a lot of experience and can help you to find the best way.
I don't write code for a single gig. I just can answer few field related questions for that amount.
Usually I do simple stuff in a day, complex tasks can take longer.