Hello,
Can a single drone master be listed (taking GitHub as the example) on more than one account’s “Authorized Applications?”
It seems like you wouldn’t be able to repeat the oAuth process for another account and so could only build repos from that first one.
Thank you,
Mark
P.S. Really love what you all are doing here and appreciate how responsive ppl have been! 
Can a single drone master be listed (taking GitHub as the example) on more than one account’s Authorized Applications?
Nope, it can only use a single client_id and client_secret. There should not be any practical limitations, however, to this approach.
Sorry if I misunderstood the question, but I think perhaps there is a misunderstanding of accounts vs registered applications.
Registered applications are owned by an account or organizations, but they are not limited to that account or organization. When you login to a registered application using the oauth2 flow you are granting that application access to your account. Any active user can login to any registered application.