Management API Access Tokens dead end

Your previous message instructed me to use ‘x-www-form-urlencoded content’. That is why I was not using application/json until I will go.

Is the client secret from my registered app the client secret I should be using? Please answer. Yes or no.

If no, which API do I get the secret from, and what form of request to I need to make to that API?

To reiterate. I need to know:

1, How do I get a client secret so I can generate a new token every day for accessing the Management API to create and edit users?

2.How do I add that client secret into a request for the new token.

I have been going around in circles for three days.

There is no point in rotating secrets until I find the answers to that question. For now I will put the sensitive stuff in the source code until I get the code working on my development machine. I need to take one step at a time.

Rob