I know I have done it before, but I am lost this time around. Previously, I have created Connected Apps for implementation of Oauth 2.0 authentication process with Salesforce. But, this environment is different. We already have a connected app, an Integration profile set up in Salesforce. I have created a RestResource Apex Class, and am not sure as to which details to be shared with the Vendor now, who will be consuming this API for their use.