It’s documented in the links I provided. Step 1 of both of those OAuth flows is to redirect the user to Twitch, with a link you construct using your client id, redirect url, scopes, and any state.
It’s documented in the links I provided. Step 1 of both of those OAuth flows is to redirect the user to Twitch, with a link you construct using your client id, redirect url, scopes, and any state.