i want to make a custom chatbot
Basically i need a link which will show in my entire moodle project, and on click of that link i need to open a modal, on that modal user can ask question and assistant can answer those question.
This sounds like the same question you asked here:
If you'd like to discuss it here instead, its best to ask a moderator to move it, rather than creating a duplicate thread. You've also recieved an answer in that thread. If that doesn't solve your problem, you might need to be more specific about your needs, what you have so far, and the problems you have.