I have a subdomain: subdomain.mysite.com that I have setup access using "Connect Two Invision Communities". I only want people to login via the "Existing user? Sign In" I do not want anyone to create an account via the "Sign Up" button. How do I disable "Sign Up" button as shown below:

I stumbled upon the solution myself.  For anyone else that might want to know how to do it enable the following:

That would indeed switch off the internal sign up button 🙂 Glad you found what you need there, Chris