The Broker Signup Process is the process by which a broker signs up with a brokerage firm. The process is typically complex, time-consuming, and difficult to navigate through. The Broker Signup Process is the process of signing up with a brokerage and opening an account. Some firms may have a similar process that is slightly different. The broker signup process can be difficult to understand at first, but it’s not actually all that difficult once you get past the initial stages.