Client ID and Client Secret for production environment


I have been using the client_id as "sugar" and no client_secret for connecting with SugarCRM during development. Can I use that for our production environment too? I see that there are options to add new client_id and client_secret, but I see that SugarCRM is different in that we are adding the key and secret ourselves instead of it getting generated from the SugarCRM side.

Should I proceed with using "sugar" as the client id and empty key or am I supposed to get a paid account and create new client id and keys there? Since I don't see an option of a developer account where I can register an app, which I don't know if SugarCRM requires since it uses password grant.

Any help regarding this would be appreciated.