Thank you all for your response, they are much appreciated.
I am not a developer, I’m a decent accountant who is starting to consult and I have an idea which is bit like " a consultant in a box".
I tried using the assistant briefly and didn’t quite get it right (it was brief though).
The bot I made in gpt worked relatively well but would be sellable in my opinion, although I would use it myself for consulting with.
I Need to look at more training material so will do that.
Without giving away what the bot does exactly. I need to work out whether I’m capable of building it…
I have used python coding but mainly generated by chatgpt 
Despite not being a developer and, I really don’t want to offend anyone, but I really don’t want to pay for the bots creation if I can do it myself. I do the consulting that this is designing, but it would open up to smaller firms who can’t pay a consultant fee.
The one I already built does work but requires reminders. When using the API version I can’t seem to tell it to follow a process. I’m wondering if I need to add code?
In reality I thought I could communicate with this version as I do in gpt and say “moving forward please do this”.
I suppose I’m asking, if I want the bot to act in a certain way given the prompt, does this need coding or can I word it to the assistant?
I hope I don’t offend anyone by saying I don’t want to pay; it is no slight on developers, I enjoy working with AI would love to say that this is mine, if that makes sense.
What is the average dev cost for a bot with a 600 page knowledge base? Any rough ideas will be helpful.
Thank you all again for responding, I really appreciate it.
Dan