I'm not sure I understand the question, what I think you are asking is that you would like to have a local user, or a non-domain user, have rights to be an account with rights to launch the CM Console?
I'm fairly certain that is not possible, since CM requires that a domain be available, and valid, all rights to connect to the console require a domain account.
Perhaps what you mean is that you would like a domain group to be granted rights, and then to that domain group you may add individual accounts.
That is a perfectly valid and often done configuration of security within the CM Console. Create a group in your domain, and add that group to security within the console. You will need to do that initial configuration as the existing administrative user; but once done, any accounts within that domain group will be able to launch and connect.
Review this, for additional information: https://learn.microsoft.com/en-us/mem/configmgr/core/understand/fundamentals-of-role-based-administration